studio do not allow return value in void func()
--- a/lib/ldb/tests/ldb_mod_op_test.c	2017-07-25 02:05:53.000000000 +0000
+++ b/lib/ldb/tests/ldb_mod_op_test.c	2017-08-10 10:03:09.680738684 +0000
@@ -1829,22 +1829,22 @@
 
 static void test_ldb_modify_during_indexed_search(void **state)
 {
-	return test_ldb_modify_during_search(state, true, false);
+	test_ldb_modify_during_search(state, true, false);
 }
 
 static void test_ldb_modify_during_unindexed_search(void **state)
 {
-	return test_ldb_modify_during_search(state, false, false);
+	test_ldb_modify_during_search(state, false, false);
 }
 
 static void test_ldb_rename_during_indexed_search(void **state)
 {
-	return test_ldb_modify_during_search(state, true, true);
+	test_ldb_modify_during_search(state, true, true);
 }
 
 static void test_ldb_rename_during_unindexed_search(void **state)
 {
-	return test_ldb_modify_during_search(state, false, true);
+	test_ldb_modify_during_search(state, false, true);
 }
 
 /*