Bug 1121290: Use "%ls" instead of "%s" in _snwprintf_s format string, r=bsmedberg

MSVC 2015 requires the use of the "l" modifier. Not sure why MSVC 2013 didn't.

--HG--
extra : rebase_source : 0d340bd7488fb2ba3fdf663a870f9815f3e723c3

dom/plugins/base/nsPluginsDirWin.cpp

@@ -71,7 +71,7 @@ static char* GetKeyValue(void* verbuf, const WCHAR* key,
 {
   WCHAR keybuf[64]; // plenty for the template below, with the longest key
                     // we use (currently "FileDescription")
-  const WCHAR keyFormat[] = L"\\StringFileInfo\\%04X%04X\\%s";
+  const WCHAR keyFormat[] = L"\\StringFileInfo\\%04X%04X\\%ls";
   WCHAR *buf = nullptr;
   UINT blen;