3006 VERIFY[S,U,P] and ASSERT[S,U,P] frequently check if first argument is zero

@@ -344,11 +344,11 @@
  */
 void
 spa_feature_enable(spa_t *spa, zfeature_info_t *feature, dmu_tx_t *tx)
 {
         ASSERT3U(spa_version(spa), >=, SPA_VERSION_FEATURES);
-        VERIFY3U(0, ==, feature_do_action(spa->spa_meta_objset,
+        VERIFY0(feature_do_action(spa->spa_meta_objset,
             spa->spa_feat_for_read_obj, spa->spa_feat_for_write_obj,
             spa->spa_feat_desc_obj, feature, FEATURE_ACTION_ENABLE, tx));
 }
 
 /*

@@ -359,11 +359,11 @@
  */
 void
 spa_feature_incr(spa_t *spa, zfeature_info_t *feature, dmu_tx_t *tx)
 {
         ASSERT3U(spa_version(spa), >=, SPA_VERSION_FEATURES);
-        VERIFY3U(0, ==, feature_do_action(spa->spa_meta_objset,
+        VERIFY0(feature_do_action(spa->spa_meta_objset,
             spa->spa_feat_for_read_obj, spa->spa_feat_for_write_obj,
             spa->spa_feat_desc_obj, feature, FEATURE_ACTION_INCR, tx));
 }
 
 /*

@@ -374,11 +374,11 @@
  */
 void
 spa_feature_decr(spa_t *spa, zfeature_info_t *feature, dmu_tx_t *tx)
 {
         ASSERT3U(spa_version(spa), >=, SPA_VERSION_FEATURES);
-        VERIFY3U(0, ==, feature_do_action(spa->spa_meta_objset,
+        VERIFY0(feature_do_action(spa->spa_meta_objset,
             spa->spa_feat_for_read_obj, spa->spa_feat_for_write_obj,
             spa->spa_feat_desc_obj, feature, FEATURE_ACTION_DECR, tx));
 }
 
 boolean_t