update golangci-lint (#2868)

internal/formatprocessor/ac3.go

@@ -1,6 +1,7 @@
 package formatprocessor
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -98,7 +99,8 @@ func (t *formatProcessorAC3) ProcessRTPPacket( //nolint:dupl
 
 		frames, err := t.decoder.Decode(pkt)
 		if err != nil {
-			if err == rtpac3.ErrNonStartingPacketAndNoPrevious || err == rtpac3.ErrMorePacketsNeeded {
+			if errors.Is(err, rtpac3.ErrNonStartingPacketAndNoPrevious) ||
+				errors.Is(err, rtpac3.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err

internal/formatprocessor/av1.go

@@ -1,6 +1,7 @@
 package formatprocessor //nolint:dupl
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -100,7 +101,8 @@ func (t *formatProcessorAV1) ProcessRTPPacket( //nolint:dupl
 
 		tu, err := t.decoder.Decode(pkt)
 		if err != nil {
-			if err == rtpav1.ErrNonStartingPacketAndNoPrevious || err == rtpav1.ErrMorePacketsNeeded {
+			if errors.Is(err, rtpav1.ErrNonStartingPacketAndNoPrevious) ||
+				errors.Is(err, rtpav1.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err

internal/formatprocessor/h264.go

@@ -2,6 +2,7 @@ package formatprocessor
 
 import (
 	"bytes"
+	"errors"
 	"time"
 
 	"github.com/bluenviron/gortsplib/v4/pkg/format"
@@ -284,7 +285,8 @@ func (t *formatProcessorH264) ProcessRTPPacket( //nolint:dupl
 		}
 
 		if err != nil {
-			if err == rtph264.ErrNonStartingPacketAndNoPrevious || err == rtph264.ErrMorePacketsNeeded {
+			if errors.Is(err, rtph264.ErrNonStartingPacketAndNoPrevious) ||
+				errors.Is(err, rtph264.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err

internal/formatprocessor/h265.go

@@ -2,6 +2,7 @@ package formatprocessor
 
 import (
 	"bytes"
+	"errors"
 	"time"
 
 	"github.com/bluenviron/gortsplib/v4/pkg/format"
@@ -303,7 +304,8 @@ func (t *formatProcessorH265) ProcessRTPPacket( //nolint:dupl
 		}
 
 		if err != nil {
-			if err == rtph265.ErrNonStartingPacketAndNoPrevious || err == rtph265.ErrMorePacketsNeeded {
+			if errors.Is(err, rtph265.ErrNonStartingPacketAndNoPrevious) ||
+				errors.Is(err, rtph265.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err

internal/formatprocessor/mjpeg.go

@@ -1,6 +1,7 @@
 package formatprocessor //nolint:dupl
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -99,7 +100,8 @@ func (t *formatProcessorMJPEG) ProcessRTPPacket( //nolint:dupl
 
 		frame, err := t.decoder.Decode(pkt)
 		if err != nil {
-			if err == rtpmjpeg.ErrNonStartingPacketAndNoPrevious || err == rtpmjpeg.ErrMorePacketsNeeded {
+			if errors.Is(err, rtpmjpeg.ErrNonStartingPacketAndNoPrevious) ||
+				errors.Is(err, rtpmjpeg.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err

internal/formatprocessor/mpeg1_audio.go

@@ -1,6 +1,7 @@
 package formatprocessor //nolint:dupl
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -98,7 +99,8 @@ func (t *formatProcessorMPEG1Audio) ProcessRTPPacket( //nolint:dupl
 
 		frames, err := t.decoder.Decode(pkt)
 		if err != nil {
-			if err == rtpmpeg1audio.ErrNonStartingPacketAndNoPrevious || err == rtpmpeg1audio.ErrMorePacketsNeeded {
+			if errors.Is(err, rtpmpeg1audio.ErrNonStartingPacketAndNoPrevious) ||
+				errors.Is(err, rtpmpeg1audio.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err

internal/formatprocessor/mpeg1_video.go

@@ -1,6 +1,7 @@
 package formatprocessor //nolint:dupl
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -99,7 +100,8 @@ func (t *formatProcessorMPEG1Video) ProcessRTPPacket( //nolint:dupl
 
 		frame, err := t.decoder.Decode(pkt)
 		if err != nil {
-			if err == rtpmpeg1video.ErrNonStartingPacketAndNoPrevious || err == rtpmpeg1video.ErrMorePacketsNeeded {
+			if errors.Is(err, rtpmpeg1video.ErrNonStartingPacketAndNoPrevious) ||
+				errors.Is(err, rtpmpeg1video.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err

internal/formatprocessor/mpeg4_audio.go

@@ -1,6 +1,7 @@
 package formatprocessor
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -102,7 +103,7 @@ func (t *formatProcessorMPEG4Audio) ProcessRTPPacket( //nolint:dupl
 
 		aus, err := t.decoder.Decode(pkt)
 		if err != nil {
-			if err == rtpmpeg4audio.ErrMorePacketsNeeded {
+			if errors.Is(err, rtpmpeg4audio.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err

internal/formatprocessor/mpeg4_video.go

@@ -2,6 +2,7 @@ package formatprocessor //nolint:dupl
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"time"
 
@@ -140,7 +141,7 @@ func (t *formatProcessorMPEG4Video) ProcessRTPPacket( //nolint:dupl
 
 		frame, err := t.decoder.Decode(pkt)
 		if err != nil {
-			if err == rtpmpeg4video.ErrMorePacketsNeeded {
+			if errors.Is(err, rtpmpeg4video.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err

internal/formatprocessor/vp8.go

@@ -1,6 +1,7 @@
 package formatprocessor //nolint:dupl
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -99,7 +100,8 @@ func (t *formatProcessorVP8) ProcessRTPPacket( //nolint:dupl
 
 		frame, err := t.decoder.Decode(pkt)
 		if err != nil {
-			if err == rtpvp8.ErrNonStartingPacketAndNoPrevious || err == rtpvp8.ErrMorePacketsNeeded {
+			if errors.Is(err, rtpvp8.ErrNonStartingPacketAndNoPrevious) ||
+				errors.Is(err, rtpvp8.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err

internal/formatprocessor/vp9.go

@@ -1,6 +1,7 @@
 package formatprocessor //nolint:dupl
 
 import (
+	"errors"
 	"fmt"
 	"time"
 
@@ -99,7 +100,8 @@ func (t *formatProcessorVP9) ProcessRTPPacket( //nolint:dupl
 
 		frame, err := t.decoder.Decode(pkt)
 		if err != nil {
-			if err == rtpvp9.ErrNonStartingPacketAndNoPrevious || err == rtpvp9.ErrMorePacketsNeeded {
+			if errors.Is(err, rtpvp9.ErrNonStartingPacketAndNoPrevious) ||
+				errors.Is(err, rtpvp9.ErrMorePacketsNeeded) {
 				return u, nil
 			}
 			return nil, err