Core: Fix game arguments (#4118)

* Fix game arguments.

Tested with Crash Team Racing Nitro Fueled

* Fix the fix

This callback runs unconditionally, so only perform erase if we actually place anything in gameArgs

src/main.cpp

@@ -99,6 +99,7 @@ int main(int argc, char* argv[]) {
         const auto& extras = app.remaining();
         if (!extras.empty()) {
             gameArgs = extras;
+            gameArgs.erase(gameArgs.begin());
         }
     });