zink: handle null src for fb refs

Acked-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9298>

diff --git a/src/gallium/drivers/zink/zink_framebuffer.h b/src/gallium/drivers/zink/zink_framebuffer.h
index 58d590e..48f0a72 100644 (file)
--- a/src/gallium/drivers/zink/zink_framebuffer.h
+++ b/src/gallium/drivers/zink/zink_framebuffer.h
@@ -77,7 +77,7 @@ zink_framebuffer_reference(struct zink_screen *screen,
 {
    struct zink_framebuffer *old_dst = *dst;
 
-   if (pipe_reference_described(&old_dst->reference, &src->reference,
+   if (pipe_reference_described(&old_dst->reference, src ? &src->reference : NULL,
                                 (debug_reference_descriptor)debug_describe_zink_framebuffer))
       zink_destroy_framebuffer(screen, old_dst);
    *dst = src;