Bug 621152: fix persona/caption button alignment, r=dao, a=beltzner

--HG--
extra : rebase_source : cab3b62f0c355c1d371edbac1a56cbeda6db4472

browser/themes/winstripe/browser/browser-aero.css

@@ -73,7 +73,7 @@
   }
 
   #main-window[sizemode="maximized"] #titlebar-buttonbox {
-    -moz-margin-end: 2px;
+    -moz-margin-end: 3px;
   }
 
   #main-window {