vc4: destroy renderonly object if present

When destroying the VC4 screen, check if renderonly exists before
freeing it.

This fixes for instance a segmentation fault caused when invoking
wflinfo.

Fixes: 187218395d7 ("renderonly: remove layering violations")
Reviewed-by: Andres Gomez <agomez@igalia.com>
Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9562>

diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c
index 5b78ff8..f3bb5ab 100644 (file)
--- a/src/gallium/drivers/vc4/vc4_screen.c
+++ b/src/gallium/drivers/vc4/vc4_screen.c
@@ -105,7 +105,8 @@ vc4_screen_destroy(struct pipe_screen *pscreen)
         _mesa_hash_table_destroy(screen->bo_handles, NULL);
         vc4_bufmgr_destroy(pscreen);
         slab_destroy_parent(&screen->transfer_pool);
-        screen->ro->destroy(screen->ro);
+        if (screen->ro)
+                screen->ro->destroy(screen->ro);
 
 #ifdef USE_VC4_SIMULATOR
         vc4_simulator_destroy(screen);