Bug 1262397 - fix a few emacs modelines; r=me

DONTBUILD because comment fixes are always safe, right?

netwerk/cache/nsDiskCacheDeviceSQL.cpp

@@ -1,4 +1,4 @@
-/* -*- Mode: C++; indent-tab-mode: nil; c-basic-offset: 2 -*- */
+/* -*- Mode: C++; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim:set ts=2 sw=2 sts=2 et cin: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this

netwerk/test/unit/test_udpsocket.js

@@ -1,4 +1,4 @@
-/* -*- Mode: Javasript; indent-tab-mode: nil; js-indent-level: 2 -*- */
+/* -*- Mode: Javascript; indent-tabs-mode: nil; js-indent-level: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
   * file, You can obtain one at http://mozilla.org/MPL/2.0/. */