list.size > 0 changed to !list.isEmpty

We care about if it's empty or not, not about it's size

Mage/src/main/java/mage/abilities/effects/common/PutLibraryIntoGraveTargetEffect.java

@@ -101,7 +101,7 @@ public class PutLibraryIntoGraveTargetEffect extends OneShotEffect {
         }
         sb.append("of his or her library into his or her graveyard");
 
-        if (message.length() > 0) {
+        if (!message.isEmpty()) {
             sb.append(", where X is the number of ");
             sb.append(message);
         }