remove windows line endings

mail/base/content/mailWindow.js

@@ -546,8 +546,8 @@ function ShowingThreadPane()
   var threadPaneSplitter = document.getElementById("threadpane-splitter");
   threadPaneSplitter.collapsed = false;
   GetMessagePane().collapsed = (threadPaneSplitter.getAttribute("state") == "collapsed");
-  // XXX We need to force the tree to refresh its new height
-  // so that it will correctly scroll to the newest message
+  // XXX We need to force the tree to refresh its new height
+  // so that it will correctly scroll to the newest message
   GetThreadTree().boxObject.height;  
   document.getElementById("key_toggleMessagePane").removeAttribute("disabled");
 }