egl/dri: don't crash when createImageFromRenderbuffer2 is NULL

The __DRI_IMAGE version can be 17 or over, while the function pointer is
NULL. Guard for that instead of crashing.

Fixes: bad24395d91 ("egl/dri: use createImageFromRenderbuffer2 when
available")
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
1 file changed