Patch game interface (#305)

* remove extra set of parentheses in call to DisplaypopupsWaiter()

* add missing event argument in call to GotoCoordImpl()

* remove event arg from GotoCoordImpl() in t6 to match other game interface scripts

GameFiles/GameInterface/_integration_t6.gsc

@@ -302,7 +302,7 @@ GotoImpl( event, data )
     }
 }
 
-GotoCoordImpl( event, data )
+GotoCoordImpl( data )
 {
     if ( !IsAlive( self ) )
     {

GameFiles/GameInterface/_integration_t6zm_helper.gsc

@@ -12,7 +12,7 @@ OnPlayerConnect()
     for ( ;; )
     {
         level waittill( "connecting", player );
-        player thread DisplaypopupsWaiter()();
+        player thread DisplaypopupsWaiter();
     }
 }