revpair: drop useless conditional
The `if not revs:` case is tested at the beginning of the function.
--- a/mercurial/scmutil.py Fri Mar 21 17:20:56 2014 -0500
+++ b/mercurial/scmutil.py Thu Mar 20 17:34:02 2014 -0700
@@ -471,9 +471,7 @@
l = revrange(repo, revs)
if len(l) == 0:
- if revs:
- raise util.Abort(_('empty revision range'))
- return repo.dirstate.p1(), None
+ raise util.Abort(_('empty revision range'))
if len(l) == 1 and len(revs) == 1 and _revrangesep not in revs[0]:
return repo.lookup(l[0]), None