fix NSTimeZone hash

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@37312 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,9 @@
+2013-10-29  Richard Frith-Macdonald <rfm@gnu.org>
+
+        * Source/NSTimeZone.m: Implement -hash as the hash of the time zone
+        name so that we can find equal timezones in a set/dictionary as we
+        should, rather than onlyn finding identical time zones.
+
 2013-10-28  Richard Frith-Macdonald <rfm@gnu.org>
 
         * Tools/AGSParser.m: Add code to ignore NS_FORMAT_ARGUMENT and

Source/NSTimeZone.m

@@ -2036,6 +2036,11 @@ localZoneString, [zone name], sign, s/3600, (s/60)%60);
   [aCoder encodeObject: [self name]];
 }
 
+- (NSUInteger) hash
+{
+  return [[self name] hash];
+}
+
 - (id) init
 {
   return [self initWithName: @"NSLocalTimeZone" data: nil];