st/va: check resource_get_info nullity in vlVaDeriveImage
This pipe_screen function is not implemented by all backends.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110443 Signed-off-by: Julien Isorce jisorce@oblong.com
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This pipe_screen function is not implemented by all backends.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110443 Signed-off-by: Julien Isorce jisorce@oblong.com