Core: Some warning fixes

--HG--
branch : trunk

src/server/game/Server/WorldSocket.cpp

@@ -626,7 +626,7 @@ int WorldSocket::handle_input_missing_data (void)
         }
     }
 
-    return n == recv_size ? 1 : 2;
+    return size_t(n) == recv_size ? 1 : 2;
 }
 
 int WorldSocket::cancel_wakeup_output (GuardType& g)