fix ob_time_to_date array index out of range bug

deps/oblib/src/lib/timezone/ob_time_convert.cpp

@@ -4948,7 +4948,11 @@ int32_t ObTimeConverter::ob_time_to_date(ObTime &ob_time)
     value = ZERO_DATE;
   } else {
     int32_t *parts = ob_time.parts_;
-    parts[DT_YDAY] = DAYS_UNTIL_MON[IS_LEAP_YEAR(parts[DT_YEAR])][parts[DT_MON] - 1] + parts[DT_MDAY];
+    if (OB_UNLIKELY(parts[DT_MON] <= 0 || parts[DT_MON] > 13)) {
+      parts[DT_YDAY] = 0;
+    } else {
+      parts[DT_YDAY] = DAYS_UNTIL_MON[IS_LEAP_YEAR(parts[DT_YEAR])][parts[DT_MON] - 1] + parts[DT_MDAY];
+    }
     int32_t days_of_years = (parts[DT_YEAR] - EPOCH_YEAR4) * DAYS_PER_NYEAR;
     int32_t leap_year_count = LEAP_YEAR_COUNT(parts[DT_YEAR] - 1) - LEAP_YEAR_COUNT(EPOCH_YEAR4 - 1);
     value = static_cast<int32_t>(days_of_years + leap_year_count + parts[DT_YDAY] - 1);