simplify code with ptrOf (#5179)

internal/conf/rtsp_transport.go

@@ -8,6 +8,10 @@ import (
 	"github.com/bluenviron/mediamtx/internal/conf/jsonwrapper"
 )
 
+func ptrOf[T any](v T) *T {
+	return &v
+}
+
 // RTSPTransport is the rtspTransport parameter.
 type RTSPTransport struct {
 	*gortsplib.Protocol
@@ -44,16 +48,13 @@ func (d *RTSPTransport) UnmarshalJSON(b []byte) error {
 
 	switch in {
 	case "udp":
-		v := gortsplib.ProtocolUDP
+		d.Protocol = ptrOf(gortsplib.ProtocolUDP)
-		d.Protocol = &v
 
 	case "multicast":
-		v := gortsplib.ProtocolUDPMulticast
+		d.Protocol = ptrOf(gortsplib.ProtocolUDPMulticast)
-		d.Protocol = &v
 
 	case "tcp":
-		v := gortsplib.ProtocolTCP
+		d.Protocol = ptrOf(gortsplib.ProtocolTCP)
-		d.Protocol = &v
 
 	case "automatic":
 		d.Protocol = nil

internal/recordstore/segment_test.go

@@ -11,6 +11,10 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+func ptrOf[T any](v T) *T {
+	return &v
+}
+
 func TestFindAllPathsWithSegments(t *testing.T) {
 	dir, err := os.MkdirTemp("", "mediamtx-recordstore")
 	require.NoError(t, err)
@@ -93,14 +97,11 @@ func TestFindSegments(t *testing.T) {
 			case "no filtering":
 
 			case "filtering":
-				tmp1 := time.Date(2015, 5, 19, 22, 18, 25, 427000, time.Local)
+				start = ptrOf(time.Date(2015, 5, 19, 22, 18, 25, 427000, time.Local))
-				start = &tmp1
+				end = ptrOf(start.Add(60 * time.Minute))
-				tmp2 := start.Add(60 * time.Minute)
-				end = &tmp2
 
 			case "start before first":
-				tmp1 := time.Date(2014, 5, 19, 22, 18, 25, 427000, time.Local)
+				start = ptrOf(time.Date(2014, 5, 19, 22, 18, 25, 427000, time.Local))
-				start = &tmp1
 			}
 
 			segments, err := FindSegments(