Fix the WSREP build

mysql-test/suite/galera/r/MW-402.result

@@ -197,6 +197,4 @@ f1	f2
 1	2
 SELECT * FROM c;
 f1	p1_id	p2_id	f2
-DROP TABLE c;
-DROP TABLE p1;
-DROP TABLE p2;
+DROP TABLE c,p1,p2;

mysql-test/suite/galera/t/MW-402.test

 --source include/galera_cluster.inc
 --source include/have_innodb.inc
---source include/have_debug_sync.inc
 --source suite/galera/include/galera_have_debug_sync.inc
 
 #
@@ -20,7 +19,6 @@ CREATE TABLE p (f1 INTEGER PRIMARY KEY, f2 INTEGER) ENGINE=INNODB;
 CREATE TABLE c (f1 INTEGER PRIMARY KEY, p_id INTEGER, f2 INTEGER,
                 CONSTRAINT fk_1 FOREIGN KEY (p_id) REFERENCES p (f1) ON DELETE CASCADE);
 
-
 INSERT INTO p VALUES (1, 0);
 INSERT INTO p VALUES (2, 0);
 
@@ -179,6 +177,4 @@ SELECT * FROM p1;
 SELECT * FROM p2;
 SELECT * FROM c;
 
-DROP TABLE c;
-DROP TABLE p1;
-DROP TABLE p2;
\ No newline at end of file
+DROP TABLE c,p1,p2;

storage/innobase/row/row0upd.cc

@@ -2433,17 +2433,15 @@ row_upd_sec_index_entry(
 		row_ins_sec_index_entry() below */
 		if (!rec_get_deleted_flag(
 			    rec, dict_table_is_comp(index->table))) {
-
 			err = btr_cur_del_mark_set_sec_rec(
 				flags, btr_cur, TRUE, thr, &mtr);
-
 			if (err != DB_SUCCESS) {
 				break;
 			}
 #ifdef WITH_WSREP
 			if (!referenced && foreign
-			    wsrep_must_process_fk(node, trx) &&
-			    !wsrep_thd_is_BF(trx->mysql_thd, FALSE)) {
+			    && wsrep_must_process_fk(node, trx)
+			    && !wsrep_thd_is_BF(trx->mysql_thd, FALSE)) {
 
 				ulint*	offsets = rec_get_offsets(
 					rec, index, NULL, ULINT_UNDEFINED,
@@ -2750,13 +2748,10 @@ row_upd_clust_rec_by_insert(
 				goto err_exit;
 			}
 #ifdef WITH_WSREP
-		} else if (foreign &&
-			   wsrep_must_process_fk(node, trx)) {
-
+		} else if (foreign && wsrep_must_process_fk(node, trx)) {
 			err = wsrep_row_upd_check_foreign_constraints(
 				node, pcur, table, index, offsets, thr, mtr);
 
-
 			switch (err) {
 			case DB_SUCCESS:
 			case DB_NO_REFERENCED_ROW:
@@ -2768,16 +2763,11 @@ row_upd_clust_rec_by_insert(
 						   << " index " << index->name
 						   << " table " << index->table->name;
 				}
-				break;
+				goto err_exit;
 			default:
 				ib::error() << "WSREP: referenced FK check fail: " << ut_strerr(err)
 					    << " index " << index->name
 					    << " table " << index->table->name;
-
-				break;
-			}
-
-			if (err != DB_SUCCESS) {
 				goto err_exit;
 			}
 #endif /* WITH_WSREP */
@@ -2994,9 +2984,7 @@ row_upd_del_mark_clust_rec(
 		err = row_upd_check_references_constraints(
 			node, pcur, index->table, index, offsets, thr, mtr);
 #ifdef WITH_WSREP
-	} else if (trx &&
-		   wsrep_must_process_fk(node, trx)) {
-
+	} else if (foreign && wsrep_must_process_fk(node, trx)) {
 		err = wsrep_row_upd_check_foreign_constraints(
 			node, pcur, index->table, index, offsets, thr, mtr);