largefiles: avoid redundant standin() invocations

There are some code paths, which apply standin() on same value
multilpe times instead of using already standin()-ed value.

"fstandin" is common name for "path to standin file" in lfutil.py, to
avoid shadowing "standin()".

hgext/largefiles/lfcommands.py

@@ -220,7 +220,8 b' def _lfconvert_addchangeset(rsrc, rdst, '
                 normalfiles.add(f)
 
         if f in lfiles:
-            dstfiles.append(lfutil.standin(f))
+            fstandin = lfutil.standin(f)
+            dstfiles.append(fstandin)
             # largefile in manifest if it has not been removed/renamed
             if f in ctx.manifest():
                 fctx = ctx.filectx(f)
@@ -236,7 +237,7 b' def _lfconvert_addchangeset(rsrc, rdst, '
                 if f not in lfiletohash or lfiletohash[f] != hash:
                     rdst.wwrite(f, ctx[f].data(), ctx[f].flags())
                     executable = 'x' in ctx[f].flags()
-                    lfutil.writestandin(rdst, lfutil.standin(f), hash,
+                    lfutil.writestandin(rdst, fstandin, hash,
                         executable)
                     lfiletohash[f] = hash
         else:

hgext/largefiles/lfutil.py

@@ -557,13 +557,13 b' def updatestandinsbymatch(repo, match):'
         # removed/renamed)
         for lfile in lfiles:
             if lfile in modifiedfiles:
-                if repo.wvfs.exists(standin(lfile)):
+                fstandin = standin(lfile)
+                if repo.wvfs.exists(fstandin):
                     # this handles the case where a rebase is being
                     # performed and the working copy is not updated
                     # yet.
                     if repo.wvfs.exists(lfile):
-                        updatestandin(repo,
-                            standin(lfile))
+                        updatestandin(repo, fstandin)
 
         return match
 

hgext/largefiles/overrides.py

@@ -739,8 +739,9 b' def overriderevert(orig, ui, repo, ctx, '
         for lfile in s.modified:
             lfutil.updatestandin(repo, lfutil.standin(lfile))
         for lfile in s.deleted:
-            if (repo.wvfs.exists(lfutil.standin(lfile))):
-                repo.wvfs.unlink(lfutil.standin(lfile))
+            fstandin = lfutil.standin(lfile)
+            if (repo.wvfs.exists(fstandin)):
+                repo.wvfs.unlink(fstandin)
 
         oldstandins = lfutil.getstandinsstate(repo)
 
@@ -1080,8 +1081,8 b' def cmdutilforget(orig, ui, repo, match,'
     forget = [f for f in forget if lfutil.standin(f) in repo[None].manifest()]
 
     for f in forget:
-        if lfutil.standin(f) not in repo.dirstate and not \
-                repo.wvfs.isdir(lfutil.standin(f)):
+        fstandin = lfutil.standin(f)
+        if fstandin not in repo.dirstate and not repo.wvfs.isdir(fstandin):
             ui.warn(_('not removing %s: file is already untracked\n')
                     % m.rel(f))
             bad.append(f)