reset charset for git rpc cals also

rhodecode/lib/middleware/pygrack.py

@@ -150,6 +150,7 b' class GitRepository(object):'
 
         resp = Response()
         resp.content_type = 'application/x-%s-result' % git_command.encode('utf8')
+        resp.charset = None
         resp.app_iter = out
         return resp