* Source/NSButtonCell.m (-title): Return @"" instead of nil

* Source/NSButtonCell.m (-alternateTitle): Return @"" instead of nil
* Source/NSButtonCell.m (-attributedAlternateTitle): Use
[self alternateTitle] instead of accessing _altContents directly to guard
against _altContents being nil
* Source/NSButtonCell.m (-attributedTitle): Don't return nil. Use
[self title] instead of accessing _contents directly to guard against
_contents being nil
* Source/NSButtonCell.m (-keyEquivalent): Return @"" instead of nil
* Source/NSButtonCell.m (-encodeWithCoder):
For keyEquivelant and alternateTitle, now that the methods never return
nil, instead of checking if they return nil to decide whether to encode them,
check if the string length is > 0.
* Source/NSToolbarItem.m (-label): Return @"" instead of nil.
* Source/NSCell.m (-stringValue): Return @"" instead of nil
* Source/NSCell.m (-attributedStringValue): Don't return nil. Use
[self stringValue] instead of accessing _contents directly to guard against
_contents being nil.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@33598 72102866-910b-0410-8b05-ffd578937521

Source/NSToolbarItem.m

@@ -1282,7 +1282,14 @@ NSString *GSMovableToolbarItemPboardType = @"GSMovableToolbarItemPboardType";
         return [menuItem title];
     }
 
-  return _label;
+  if (nil != _label)
+    {
+      return _label;
+    }
+  else
+    {
+      return @"";
+    }
 }
 
 - (NSSize) maxSize