fetch: inherit filter-spec from partial clone

Teach (partial) fetch to inherit the filter-spec used by
the partial clone.  Extend --no-filter to override this
inheritance.

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c
index cbf5035..a7bc136 100644
--- a/builtin/fetch-pack.c
+++ b/builtin/fetch-pack.c
@@ -158,7 +158,7 @@ int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
 			continue;
 		}
 		if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
-			list_objects_filter_release(&args.filter_options);
+			list_objects_filter_set_no_filter(&args.filter_options);
 			continue;
 		}
 		usage(fetch_pack_usage);