Make sure the comment is not set to None

Louis-Philippe Huberdeau · Louis-Philippe Huberdeau · commit 4c7da1133136 · 2017-07-19T14:46:36.000-04:00
diff --git a/lib/utils/har.py b/lib/utils/har.py
@@ -142,7 +142,7 @@ def __init__(self, httpVersion, status, statusText, headers, content, raw=None,
     @classmethod
     def parse(cls, raw):
         altered = raw
-        comment = None
+        comment = ""
 
         if altered.startswith("HTTP response ["):
             io = StringIO.StringIO(raw)
