Editorial: ToDateDurationRecordWithoutTime is infallible

The input is an existing valid Temporal.Duration object, which cannot have
a total of days through nanoseconds that exceeds the 2⁵³ limit. So days
cannot be out of range in the CreateDateDurationRecord call.

h/t Anba

Closes: #3028

Author: ptomato

spec/duration.html

@@ -909,7 +909,7 @@ <h1>
       <h1>
         ToDateDurationRecordWithoutTime (
           _duration_: a Temporal.Duration,
-        ): either a normal completion containing a Date Duration Record, or a throw completion
+        ): a Date Duration Record
       </h1>
       <dl class="header">
         <dt>description</dt>
@@ -918,7 +918,7 @@ <h1>
       <emu-alg>
         1. Let _internalDuration_ be ToInternalDurationRecordWith24HourDays(_duration_).
         1. Let _days_ be truncate(_internalDuration_.[[Time]] / nsPerDay).
-        1. Return ? CreateDateDurationRecord(_internalDuration_.[[Date]].[[Years]], _internalDuration_.[[Date]].[[Months]], _internalDuration_.[[Date]].[[Weeks]], _days_).
+        1. Return ! CreateDateDurationRecord(_internalDuration_.[[Date]].[[Years]], _internalDuration_.[[Date]].[[Months]], _internalDuration_.[[Date]].[[Weeks]], _days_).
       </emu-alg>
     </emu-clause>
 

spec/plaindate.html

@@ -927,7 +927,7 @@ <h1>
         1. Let _calendar_ be _temporalDate_.[[Calendar]].
         1. Let _duration_ be ? ToTemporalDuration(_temporalDurationLike_).
         1. If _operation_ is ~subtract~, set _duration_ to CreateNegatedTemporalDuration(_duration_).
-        1. Let _dateDuration_ be ? ToDateDurationRecordWithoutTime(_duration_).
+        1. Let _dateDuration_ be ToDateDurationRecordWithoutTime(_duration_).
         1. Let _resolvedOptions_ be ? GetOptionsObject(_options_).
         1. Let _overflow_ be ? GetTemporalOverflowOption(_resolvedOptions_).
         1. Let _result_ be ? CalendarDateAdd(_calendar_, _temporalDate_.[[ISODate]], _dateDuration_, _overflow_).

spec/plainyearmonth.html

@@ -652,7 +652,7 @@ <h1>
           1. Assert: ISODateWithinLimits(_date_) is *true*.
         1. Else,
           1. Let _date_ be _intermediateDate_.
-        1. Let _durationToAdd_ be ? ToDateDurationRecordWithoutTime(_duration_).
+        1. Let _durationToAdd_ be ToDateDurationRecordWithoutTime(_duration_).
         1. Let _addedDate_ be ? CalendarDateAdd(_calendar_, _date_, _durationToAdd_, _overflow_).
         1. Let _addedDateFields_ be ISODateToFields(_calendar_, _addedDate_, ~year-month~).
         1. Let _isoDate_ be ? CalendarYearMonthFromFields(_calendar_, _addedDateFields_, _overflow_).