Very minor channel / variant performance improvements and cleanup.

src/modules/event/Event.cpp

@@ -63,14 +63,14 @@ Message *Message::fromLua(lua_State *L, int n)
 		if (lua_isnoneornil(L, n+i))
 			break;
 
-		if (!Variant::fromLua(L, n+i, &varg))
+		vargs.push_back(Variant::fromLua(L, n+i));
+
+		if (vargs.back().getType() == Variant::UNKNOWN)
 		{
 			vargs.clear();
 			luaL_error(L, "Argument %d can't be stored safely\nExpected boolean, number, string or userdata.", n+i);
 			return nullptr;
 		}
-
-		vargs.push_back(varg);
 	}
 
 	return new Message(name, vargs);

src/modules/event/wrap_Event.cpp

@@ -93,11 +93,7 @@ int w_clear(lua_State *)
 
 int w_quit(lua_State *L)
 {
-	std::vector<Variant> args;
-
-	Variant v;
-	if (Variant::fromLua(L, 1, &v))
-		args.push_back(v);
+	std::vector<Variant> args = {Variant::fromLua(L, 1)};
 
 	StrongRef<Message> m(new Message("quit", args), Acquire::NORETAIN);
 	instance()->push(m);