manifest: correct the one use of iterkeys() on a dict
As far as I can tell, this is the only iterkeys() in this file that
was actually on a dict. The rest are on custom manifest types.
Differential Revision: https://phab.mercurial-scm.org/D2316
--- a/mercurial/manifest.py Sun Feb 18 00:43:50 2018 -0500
+++ b/mercurial/manifest.py Sun Feb 18 00:49:11 2018 -0500
@@ -960,7 +960,7 @@
else:
files.update(m1.iterkeys())
- for fn in t1._files.iterkeys():
+ for fn in t1._files:
if fn not in t2._files:
files.add(t1._subpath(fn))