trydiff: use 'not in addedset' for symmetry with 'not in removedset'
With the previous change in place, we can safely use 'addedset'.
--- a/mercurial/patch.py Tue Dec 23 16:12:54 2014 -0800
+++ b/mercurial/patch.py Tue Dec 23 16:25:00 2014 -0800
@@ -1807,7 +1807,7 @@
tn = None
dodiff = True
header = []
- if f in man1:
+ if f not in addedset:
to = getfilectx(f, ctx1).data()
if f not in removedset:
tn = getfilectx(f, ctx2).data()