DAOS-13786 client: pool_free take rdlock for dp_co_list check

Fix for Coverity CID 1444801

Required-githooks: true

Signed-off-by: Kenneth Cain <kenneth.c.cain@intel.com>

src/pool/cli.c

@@ -87,10 +87,14 @@ pool_free(struct d_hlink *hlink)
 
  pool = container_of(hlink, struct dc_pool, dp_hlink);
  D_ASSERT(daos_hhash_link_empty(&pool->dp_hlink));
+
+ D_RWLOCK_RDLOCK(&pool->dp_co_list_lock);
+ D_ASSERT(d_list_empty(&pool->dp_co_list));
+ D_RWLOCK_UNLOCK(&pool->dp_co_list_lock);
+
  D_RWLOCK_DESTROY(&pool->dp_map_lock);
  D_MUTEX_DESTROY(&pool->dp_client_lock);
  D_RWLOCK_DESTROY(&pool->dp_co_list_lock);
- D_ASSERT(d_list_empty(&pool->dp_co_list));
 
  if (pool->dp_map != NULL)
  pool_map_decref(pool->dp_map);