xwayland/glamour-gbm: Handle DRM_FORMAT_MOD_INVALID gracefully
The compositor may send DRM_FORMAT_MOD_INVALID instead of a list of modifiers for various reasons. Handle this gracefully by ignoring it. Without this, if a compositor would send DRM_FORMAT_MOD_INVALID, it'd result in empty windows provided by Xwayland.
wip/wayland-dma-buf-only-invalid in 11 minutes and 7 seconds (queued for 1 second)3 jobs for