histedit: binascii.unhexlify (aka node.bin) throws new exception type on py3

Lucky for us, the exception type exists on 2.7, so we can include it
in the except block without any extra work.

Differential Revision: https://phab.mercurial-scm.org/D2244

hgext/histedit.py

@@ -183,6 +183,7 b' unexpectedly::'
 
 from __future__ import absolute_import
 
+import binascii
 import errno
 import os
 
@@ -425,7 +426,7 b' class histeditaction(object):'
         rulehash = rule.strip().split(' ', 1)[0]
         try:
             rev = node.bin(rulehash)
-        except TypeError:
+        except (TypeError, binascii.Error):
             raise error.ParseError("invalid changeset %s" % rulehash)
         return cls(state, rev)