evolve: clarify code in _singlesuccessor
Before this patch we were not very explicit with this while condition in
_singlesuccessor. This patch makes it more legible.
--- a/hgext/evolve.py Tue Jun 23 16:50:39 2015 -0700
+++ b/hgext/evolve.py Mon Jun 22 17:46:32 2015 -0700
@@ -1364,7 +1364,7 @@
ui = repo.ui
newer = obsolete.successorssets(repo, obs.node())
# search of a parent which is not killed
- while not newer or newer == [()]:
+ while not newer:
ui.debug("stabilize target %s is plain dead,"
" trying to stabilize on its parent\n" %
obs)