mq: fix comment to reflect change in efbee27415ab

hgext/mq.py

@@ -1270,7 +1270,7 b' class queue(object):'
             # and then commit.
             #
             # this should really read:
-            #   mm, dd, aa = repo.status(top, patchparent)[:4]
+            #   mm, dd, aa = repo.status(top, patchparent)[:3]
             # but we do it backwards to take advantage of manifest/chlog
             # caching against the next repo.status call
             mm, aa, dd = repo.status(patchparent, top)[:3]