Missing return statement

Also, why is git showing whole-class diffs? Must be the dang line
endings again

Author: dmulloy2

modules/API/src/main/java/com/comphenix/protocol/injector/packet/PacketRegistry.java

@@ -62,6 +62,7 @@ private static void initialize() {
 			if (NETTY == null) {
 				throw new IllegalStateException("Failed to initialize packet registry.");
 			}
+			return;
 		}
 
 		INITIALIZED = true;