Fix user options for fractional digits in Intl.NumberFormatter

src/js/i18n.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // ECMAScript 402 API implementation.
 
 /**
  * Intl object is a single object that has some named properties,
  * all of which are constructors.
  */
@@ skipping 1083 matching lines @@
     defineWEProperty(internalOptions, 'currency', %StringToUpperCase(currency));
     defineWEProperty(internalOptions, 'currencyDisplay', currencyDisplay);
   }
 
   // Digit ranges.
   var mnid = getNumberOption(options, 'minimumIntegerDigits', 1, 21, 1);
   defineWEProperty(internalOptions, 'minimumIntegerDigits', mnid);
 
   var mnfd = options['minimumFractionDigits'];
   var mxfd = options['maximumFractionDigits'];
-  if (!IS_UNDEFINED(mnfd) || !internalOptions.style === 'currency') {
+  if (!IS_UNDEFINED(mnfd) || internalOptions.style !== 'currency') {
     mnfd = getNumberOption(options, 'minimumFractionDigits', 0, 20, 0);
     defineWEProperty(internalOptions, 'minimumFractionDigits', mnfd);
   }
 
-  if (!IS_UNDEFINED(mxfd) || !internalOptions.style === 'currency') {
+  if (!IS_UNDEFINED(mxfd) || internalOptions.style !== 'currency') {
+    var min_mxfd = internalOptions.style === 'percent' ? 0 : 3;
     mnfd = IS_UNDEFINED(mnfd) ? 0 : mnfd;
-    fallback_limit = (mnfd > 3) ? mnfd : 3;
+    fallback_limit = (mnfd > min_mxfd) ? mnfd : min_mxfd;
     mxfd = getNumberOption(options, 'maximumFractionDigits', mnfd, 20, fallback_limit);
     defineWEProperty(internalOptions, 'maximumFractionDigits', mxfd);
   }
 
   var mnsd = options['minimumSignificantDigits'];
   var mxsd = options['maximumSignificantDigits'];
   if (!IS_UNDEFINED(mnsd) || !IS_UNDEFINED(mxsd)) {
     mnsd = getNumberOption(options, 'minimumSignificantDigits', 1, 21, 0);
     defineWEProperty(internalOptions, 'minimumSignificantDigits', mnsd);
 
@@ skipping 987 matching lines @@
     }
 
     var locales = %_Arguments(0);
     var options = %_Arguments(1);
     return toLocaleDateTime(
         this, locales, options, 'time', 'time', 'dateformattime');
   }
 );
 
 })