addrevision: handle code path not producing delta
We would like to be able to exit the delta generation block without a valid
delta (for a more flexible control flow). So we make sure we do not expand the
"delta" content unless we actually have a delta.
We can do it one level lower because 'delta' is initialised at None anyway. Not
adding a level to the assignment prevent a line length issue.
--- a/mercurial/revlog.py Tue Dec 01 15:29:11 2015 -0800
+++ b/mercurial/revlog.py Tue Dec 01 16:22:49 2015 -0800
@@ -1459,6 +1459,7 @@
delta = builddelta(prev)
else:
delta = builddelta(prev)
+ if delta is not None:
dist, l, data, base, chainbase, chainlen, compresseddeltalen = delta
if not self._isgooddelta(delta, textlen):