Function undo_add_role_user_mapping

sql/sql_acl.cc:4043–4052

Revert the last add_role_user_mapping() action */

  Revert the last add_role_user_mapping() action
*/
static void undo_add_role_user_mapping(ACL_USER_BASE *grantee, ACL_ROLE *role)
{
  void *pop __attribute__((unused));

  pop= pop_dynamic(&grantee->role_grants);
  DBUG_ASSERT(role == *(ACL_ROLE**)pop);

  pop= pop_dynamic(&role->parent_grantee);
  DBUG_ASSERT(grantee == *(ACL_USER_BASE**)pop);
}

/*
  this helper is used when building role_grants and parent_grantee arrays