Fix memory leak, See #952

lualib-src/lua-multicast.c

@@ -133,6 +133,7 @@ mc_remote(lua_State *L) {
 	lua_pushlightuserdata(L, pack->data);
 	lua_pushinteger(L, (lua_Integer)(pack->size));
 	skynet_free(pack);
+	skynet_free(ptr);
 	return 2;
 }
 

service/multicastd.lua

@@ -97,7 +97,10 @@ skynet.register_protocol {
 	unpack = function(msg, sz)
 		return mc.packremote(msg, sz)
 	end,
-	dispatch = publish,
+	dispatch = function (...)
+		skynet.ignoreret()
+		publish(...)
+	end,
 }
 
 -- publish a message, if the caller is remote, forward the message to the owner node (by remote_publish)