lp:730627 TIME_to_ulonglong: Assertion `0' failed in 5.1-micro on wrong argument to MAKETIME

correct the return value of Item_func_maketime::get_date()

mysql-test/r/func_time.result

@@ -1427,3 +1427,6 @@ Warning	1292	Incorrect datetime value: '2010-40-50'
 select subtime('0000-00-10 10:10:10', '30 10:00:00');
 subtime('0000-00-10 10:10:10', '30 10:00:00')
 NULL
+select maketime(20,61,10)+0;
+maketime(20,61,10)+0
+NULL

mysql-test/t/func_time.test

@@ -886,3 +886,8 @@ select truncate(date('2010-40-10'), 6);
 select extract(month from '2010-40-50');
 select subtime('0000-00-10 10:10:10', '30 10:00:00');
 
+#
+# lp:730627 TIME_to_ulonglong: Assertion `0' failed in 5.1-micro on wrong argument to MAKETIME
+#
+select maketime(20,61,10)+0;
+

sql/item_timefunc.cc

@@ -2582,7 +2582,7 @@ bool Item_func_maketime::get_date(MYSQL_TIME *ltime, uint fuzzy_date)
                    args[2]->null_value ||
                    minute < 0 || minute > 59 ||
                    second < 0 || second > 59)))
-    return 0;
+    return 1;
 
   bzero(ltime, sizeof(*ltime));
   ltime->time_type= MYSQL_TIMESTAMP_TIME;