Bug 1480158 - The profile manager no longer updates the profile name after a rename. r=mak

--HG--
extra : rebase_source : 5cfaf584771bd7b1c2fc972d9b6873f4ebf818f1
extra : amend_source : 9657c1a290fdb43965053e71519d39fb6d64733f

toolkit/profile/content/profileSelection.js

@@ -197,7 +197,7 @@ function RenameProfile() {
       return false;
     }
 
-    selectedItem.label = newName;
+    selectedItem.firstChild.setAttribute("value", newName);
     var tiptext = gProfileManagerBundle.
                   getFormattedString("profileTooltip",
                                      [newName, selectedProfile.rootDir.path]);