push RawFilePath down into Annex.ReplaceFile

Minor optimisation, but a win in every case, except for a couple where
it's a wash.

Note that replaceFile still takes a FilePath, because it needs to
operate on Chars to truncate unicode filenames properly.

Annex/Content.hs

@@ -477,7 +477,7 @@ linkToAnnex key src srcic = ifM (checkSecureHashes' key)
 linkFromAnnex :: Key -> RawFilePath -> Maybe FileMode -> Annex LinkAnnexResult
 linkFromAnnex key dest destmode =
 	replaceFile' (const noop) (fromRawFilePath dest) (== LinkAnnexOk) $ \tmp ->
-		linkFromAnnex' key (toRawFilePath tmp) destmode
+		linkFromAnnex' key tmp destmode
 
 {- This is only safe to use when dest is not a worktree file. -}
 linkFromAnnex' :: Key -> RawFilePath -> Maybe FileMode -> Annex LinkAnnexResult