Cleanup: Datetime() constructors accepting Longlong_hybrid/Sec6 do not need THD

Removing the unused THD* parameter.

sql/field.cc

@@ -5118,7 +5118,7 @@ int Field_timestamp::store(longlong nr, bool unsigned_val)
   Longlong_hybrid tmp(nr, unsigned_val);
   ErrConvInteger str(tmp);
   THD *thd= get_thd();
-  Datetime dt(thd, &error, tmp, Timestamp::DatetimeOptions(thd));
+  Datetime dt(&error, tmp, Timestamp::DatetimeOptions(thd));
   return store_TIME_with_warning(thd, &dt, &str, error);
 }
 
@@ -5596,7 +5596,7 @@ int Field_datetime::store(longlong nr, bool unsigned_val)
   Longlong_hybrid tmp(nr, unsigned_val);
   ErrConvInteger str(tmp);
   THD *thd= get_thd();
-  Datetime dt(thd, &error, tmp, Datetime::Options(thd));
+  Datetime dt(&error, tmp, Datetime::Options(thd));
   return store_TIME_with_warning(&dt, &str, error);
 }
 
@@ -6314,7 +6314,7 @@ int Field_date_common::store(longlong nr, bool unsigned_val)
   Longlong_hybrid tmp(nr, unsigned_val);
   ErrConvInteger str(tmp);
   THD *thd= get_thd();
-  Datetime dt(thd, &error, tmp, Date::Options(thd));
+  Datetime dt(&error, tmp, Date::Options(thd));
   return store_TIME_with_warning(&dt, &str, error);
 }
 

sql/sql_type.h

@@ -1950,14 +1950,14 @@ class Datetime: public Temporal_with_date
   }
 
 protected:
-  Datetime(THD *thd, int *warn, const Sec6 &nr, date_mode_t flags)
+  Datetime(int *warn, const Sec6 &nr, date_mode_t flags)
    :Temporal_with_date(warn, nr, flags)
   {
     date_to_datetime_if_needed();
     DBUG_ASSERT(is_valid_value_slow());
   }
   Datetime(THD *thd, int *warn, const Sec9 &nr, date_mode_t fuzzydate)
-   :Datetime(thd, warn, static_cast<const Sec6>(nr), fuzzydate)
+   :Datetime(warn, static_cast<const Sec6>(nr), fuzzydate)
   {
     if (is_valid_datetime() &&
         time_round_mode_t(fuzzydate) == TIME_FRAC_ROUND)
@@ -1966,8 +1966,8 @@ class Datetime: public Temporal_with_date
   }
 
 public:
-  Datetime(THD *thd, int *warn, const Longlong_hybrid &nr, date_mode_t mode)
-   :Datetime(thd, warn, Sec6(nr), mode)
+  Datetime(int *warn, const Longlong_hybrid &nr, date_mode_t mode)
+   :Datetime(warn, Sec6(nr), mode)
   { }
   Datetime(THD *thd, int *warn, double nr, date_mode_t fuzzydate)
    :Datetime(thd, warn, Sec9(nr), fuzzydate)