Simplify MinecraftConnection release logic.

proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnection.java

@@ -102,34 +102,27 @@ public class MinecraftConnection extends ChannelInboundHandlerAdapter {
       return;
     }
 
-    if (msg instanceof MinecraftPacket) {
+    try {
       if (sessionHandler.beforeHandle()) {
         return;
       }
 
+      if (msg instanceof MinecraftPacket) {
         MinecraftPacket pkt = (MinecraftPacket) msg;
         if (!pkt.handle(sessionHandler)) {
           sessionHandler.handleGeneric((MinecraftPacket) msg);
         }
       } else if (msg instanceof HAProxyMessage) {
-      if (sessionHandler.beforeHandle()) {
-        return;
-      }
-
         HAProxyMessage proxyMessage = (HAProxyMessage) msg;
         this.remoteAddress = new InetSocketAddress(proxyMessage.sourceAddress(),
             proxyMessage.sourcePort());
       } else if (msg instanceof ByteBuf) {
-      try {
-        if (sessionHandler.beforeHandle()) {
-          return;
-        }
         sessionHandler.handleUnknown((ByteBuf) msg);
+      }
     } finally {
       ReferenceCountUtil.release(msg);
     }
   }
-  }
 
   @Override
   public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {