set fileEncoding on CheckAttr handles

Seemed to work without it, but this is correct.

Git/CheckAttr.hs

@@ -23,6 +23,8 @@ checkAttrStart attrs repo = do
 	cwd <- getCurrentDirectory
 	(pid, from, to) <- hPipeBoth "git" $ toCommand $
 		gitCommandLine params repo
+	fileEncoding from
+	fileEncoding to
 	return (pid, from, to, attrs, cwd)
 	where
 		params =