lfutil: avoid creating unnecessary copy of status tuple

In lfdirstatestatus(), the status tuple gets deconstructed, the lists
get updated, and then an identical status tuple gets created and
returned. Change it so we simply return the original tuple.

hgext/largefiles/lfutil.py

@@ -137,7 +137,7 b' def openlfdirstate(ui, repo, create=True'
 def lfdirstatestatus(lfdirstate, repo, rev):
     match = match_.always(repo.root, repo.getcwd())
     unsure, s = lfdirstate.status(match, [], False, False, False)
-    modified, added, removed, missing, unknown, ignored, clean = s
+    modified, _added, _removed, _missing, _unknown, _ignored, clean = s
     for lfile in unsure:
         try:
             fctx = repo[rev][standin(lfile)]
@@ -148,7 +148,7 b' def lfdirstatestatus(lfdirstate, repo, r'
         else:
             clean.append(lfile)
             lfdirstate.normal(lfile)
-    return (modified, added, removed, missing, unknown, ignored, clean)
+    return s
 
 def listlfiles(repo, rev=None, matcher=None):
     '''return a list of largefiles in the working copy or the