Fix Spoutcraft support. @Zidane @Dockter, please be aware that you were misinformed / incorrect in your statements and Netty in Spigot has nothing to do with the issues experienced by users with Spoutcraft.

protocol/src/main/java/net/md_5/mendax/PacketDefinitions.java

@@ -270,6 +270,10 @@ public class PacketDefinitions
         {
             INT, SHORT, INT, BYTE, SHORT_BYTE
         };
+        opCodes[0xC3] = new OpCode[]
+        {
+            SHORT, SHORT, INT_BYTE
+        };
         opCodes[0xC8] = new OpCode[]
         {
             INT, BYTE