fix for bug #382534: horizontal spacing of favicons in the bookmarks sidebar on Mac OS X.

patch=cyen

r=sspitzer

browser/themes/gnomestripe/browser/places/places.css

@@ -30,12 +30,9 @@
   -moz-appearance: listbox;
 }
 
-treechildren::-moz-tree-image {
+treechildren::-moz-tree-image(title) {
   padding-right: 2px;
   margin: 0px 2px;
-}
-
-treechildren::-moz-tree-image(title) {
   width: 16px;
   height: 16px;
 }