Merge branch 'js/gc-repack-close-before-remove'

"git gc" and "git repack" did not close the open packfiles that
they found unneeded before removing them, which didn't work on a
platform incapable of removing an open file.  This has been
corrected.

* js/gc-repack-close-before-remove:
  gc/repack: release packs when needed

builtin/gc.c

@@ -659,8 +659,10 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
 
 	report_garbage = report_pack_garbage;
 	reprepare_packed_git(the_repository);
-	if (pack_garbage.nr > 0)
+	if (pack_garbage.nr > 0) {
+		close_all_packs(the_repository->objects);
 		clean_pack_garbage();
+	}
 
 	if (gc_write_commit_graph)
 		write_commit_graph_reachable(get_object_directory(), 0,

builtin/repack.c

@@ -419,6 +419,8 @@ int cmd_repack(int argc, const char **argv, const char *prefix)
 	if (!names.nr && !po_args.quiet)
 		printf_ln(_("Nothing new to pack."));
 
+	close_all_packs(the_repository->objects);
+
 	/*
 	 * Ok we have prepared all new packfiles.
 	 * First see if there are packs of the same name and if so