Date is an int as a string in changelog

mercurial/hg.py

@@ -110,7 +110,7 b' class changelog(revlog):'
 
     def extract(self, text):
         if not text:
-            return (nullid, "", 0, [], "")
+            return (nullid, "", "0", [], "")
         last = text.index("\n\n")
         desc = text[last + 2:]
         l = text[:last].splitlines()