Fix a few missing implicit void arg declarations

While working on #535, I noticed that editormenuactionpress() still
didn't do the explicit void declaration. Then I ran `rg 'void.*\(\)'`
and found three other functions that I somehow missed in #628. Whoops.
Well, now they no longer are missed.

desktop_version/src/Game.cpp

@@ -6044,7 +6044,7 @@ bool Game::customsavequick(std::string savfile)
 }
 
 
-void Game::loadtele()
+void Game::loadtele(void)
 {
     tinyxml2::XMLDocument doc;
     if (!FILESYSTEM_loadTiXml2Document("saves/tsave.vvv", doc)) return;