Use an RGBA format for 32 bit images
Use an RGBA format for 32 bit images

With the upcoming Render changes, we can no longer assume that the
fourth channel of images is unused.

facboy/xserver-xorg-video-qxl,fgouget/xf86-video-qxl,facboy/xserver-xorg-video-qxl,fgouget/xf86-video-qxl,facboy/xserver-xorg-video-qxl,fgouget/xf86-video-qxl,fgouget/xf86-video-qxl,facboy/xserver-xorg-video-qxl