5045 use atomic_{inc,dec}_* instead of atomic_add_*

@@ -477,11 +477,11 @@
         ASSERT(ncec->ncec_refcnt >= 2);
         ncec->ncec_flags |= NCE_F_CONDEMNED;
         mutex_exit(&ncec->ncec_lock);
 
         /* Count how many condemned ires for kmem_cache callback */
-        atomic_add_32(&ipst->ips_num_nce_condemned, 1);
+        atomic_inc_32(&ipst->ips_num_nce_condemned);
         nce_fastpath_list_delete(ncec->ncec_ill, ncec, NULL);
 
         /* Complete any waiting callbacks */
         ncec_cb_dispatch(ncec);