Remove trailing whitespace to trigger builds in a CLOSED TREE

browser/base/content/aboutDialog.xul

@@ -37,8 +37,8 @@
 #
 # ***** END LICENSE BLOCK ***** -->
 
-<?xml-stylesheet href="chrome://global/skin/" type="text/css"?> 
-<?xml-stylesheet href="chrome://browser/content/aboutDialog.css" type="text/css"?> 
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+<?xml-stylesheet href="chrome://browser/content/aboutDialog.css" type="text/css"?>
 
 <!DOCTYPE window [
 <!ENTITY % brandDTD SYSTEM "chrome://branding/locale/brand.dtd" >