qmlgl: Fix opengl header guard changes again
Reapply 3d708a5b in the correct place after the iOS additions.
@nirbheek Can you double check that this change works with cerbero!100 (merged) ?
Reapply 3d708a5b in the correct place after the iOS additions.
@nirbheek Can you double check that this change works with cerbero!100 (merged) ?