Merge pull request #8939 from ctiller/fixit24

Fix use-after-free in resource quota
diff --git a/src/core/lib/iomgr/resource_quota.c b/src/core/lib/iomgr/resource_quota.c
index 1639202..213d296 100644
--- a/src/core/lib/iomgr/resource_quota.c
+++ b/src/core/lib/iomgr/resource_quota.c
@@ -231,6 +231,7 @@
       resource_user->links[list].prev;
   resource_user->links[list].prev->links[list].next =
       resource_user->links[list].next;
+  resource_user->links[list].next = resource_user->links[list].prev = NULL;
 }
 
 /*******************************************************************************