Less indentation

posts.py

@@ -7088,13 +7088,12 @@ def post_is_muted(base_dir: str, nickname: str, domain: str,
     if is_muted is True or is_muted is False:
         return is_muted
 
-    is_muted = False
     post_dir = acct_dir(base_dir, nickname, domain)
     mute_filename = \
         post_dir + '/inbox/' + message_id.replace('/', '#') + '.json.muted'
     if os.path.isfile(mute_filename):
-        is_muted = True
-    else:
+        return True
+    is_muted = False
     mute_filename = \
         post_dir + '/outbox/' + \
         message_id.replace('/', '#') + '.json.muted'