Fix one place in the Mercurial client that wasn't using self._exe
This fixes up one other place that was using a hard-coded `hg` instead
of `self._exe`. Trivial change.
Reviewed at
@@ -210,7 +210,7 @@ class MercurialClient(SCMClient):
log_entries = execute(
[
- 'hg',
+ self._exe,
'log',
'--template',
'%s%s' % (log_format, self._RECORD_SEP_ESC),
