mesa: unref syncobj after wait_sync
Before returning the wait_sync() function, the sync object must be unreferenced. Closes: mesa/mesa#6377 Fixes: 0af7c1e3 ("mesa/st: merge the syncobj code from st into mesa") Signed-off-by:Juan A. Suarez Romero <jasuarez@igalia.com> Reviewed-by:
Marek Olšák <marek.olsak@amd.com> Part-of: <mesa/mesa!16242>