Bug 1173725 - followup: add license header to SVG file, rs=me, DONTBUILD because comment-only-change on a CLOSED TREE.

--HG--
extra : commitid : F3gowUdF8Of
extra : amend_source : 2e85673506108b3f70e66710abf0cb50ffe60c00

browser/themes/windows/caption-buttons.svg

@@ -1,4 +1,7 @@
 <svg width="12" height="12" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<!-- 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/. -->
   <style>
     g {
       stroke: ButtonText;