Use getdefaultlocale in fix_encoding

R=dnj@chromium.org, maruel@chromium.org
BUG=595883

Review URL: https://codereview.chromium.org/1843843002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@299547 0039d316-1c4b-4281-b951-d872f2087c98

fix_encoding.py

@@ -51,7 +51,7 @@ def fix_default_encoding():
     except locale.Error:
       continue
     try:
-      lang = locale.getlocale(aref)[0]
+      lang, _ = locale.getdefaultlocale()
     except (TypeError, ValueError):
       continue
     if lang: