fix flush of a closed file handle

Avoids displaying warning about git-annex restage needing to be run in
situations where it does not.

Closing a handle flushes it anyway, so no need for an explict flush. The
handle does get closed twice, but that's fine, the second one does nothing.

Sponsored-by: Dartmouth College's DANDI project

CHANGELOG

@@ -1,3 +1,10 @@
+git-annex (10.20220928) UNRELEASED; urgency=medium
+
+  * Avoid displaying warning about git-annex restage needing to be run
+    in situations where it does not.
+
+ -- Joey Hess <id@joeyh.name>  Fri, 30 Sep 2022 13:54:23 -0400
+
 git-annex (10.20220927) upstream; urgency=medium
 
   * Fix a bug in the last release that caused v8 repositories to upgrade

Git/UpdateIndex.hs

@@ -160,7 +160,6 @@ refreshIndex repo feeder = bracket
 
 	go (Just h, _, _, pid) = do
 		let closer = do
-			hFlush h
 			hClose h
 			forceSuccessProcess p pid
 		feeder $ \case

doc/bugs/windows__58___needlessly_reminded_to_run___96__restage__96__.mdwn

@@ -178,3 +178,5 @@ Git Annex is great. I use it several times a week with my multigigabyte backups,
 Big thanks, Joey!
 
 [[!meta author=jkniiv]]
+
+> [[fixed|done]] --[[Joey]]