mesa 18.2.5, introduced in 6b490ee296
changed some private headers, that allegro is relying on. This fix backports
the relevant commit from allegro upstream
cc @7c6f434c
mesa 18.2.5, introduced in 6b490ee296
changed some private headers, that allegro is relying on. This fix backports
the relevant commit from allegro upstream
cc @7c6f434c