Avoid an additional level of indentation

docker/auth/auth.py

@@ -108,7 +108,7 @@ def load_config(root=None):
     if not os.path.exists(config_file):
         return config
 
-    with open(config_file) as f:
+    f = open(config_file)
     try:
         config['Configs'] = json.load(f)
         for k, conf in six.iteritems(config['Configs']):
@@ -129,5 +129,7 @@ def load_config(root=None):
             'Password': pwd,
             'Email': buf[1]
         }
+    finally:
+        f.close()
 
     return config