bundlerepo: fix closing and docstring of getremotechanges

I did not in fact implement what I documented about closing of the
original repo. And there was a bit of leftover from an older version
of the API.

mercurial/bundlerepo.py

@@ -295,7 +295,8 b' def getremotechanges(ui, repo, other, on'
     "onlyheads" restricts the returned changes to those reachable from the
       specified heads.
     "bundlename", if given, stores the bundle to this file path permanently;
-      the returned "bundle" will be None.
+      otherwise it's stored to a temp file and gets deleted again when you call
+      the returned "cleanupfn".
     "force" indicates whether to proceed on unrelated repos.
 
     Returns a tuple (local, csets, cleanupfn):
@@ -348,7 +349,7 b' def getremotechanges(ui, repo, other, on'
             bundlerepo.close()
         if bundle:
             os.unlink(bundle)
-        localrepo.close()
+        other.close()
 
     return (localrepo, csets, cleanup)