refs tests: ignore ignore errno in test-ref-store helper

The cmd_resolve_ref() function has always ignored errno on failure,
but let's do so explicitly when using the refs_resolve_ref_unsafe()
function.

Signed-off-by: Ævar Arnfjörð Bjarmason <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: avar

t/helper/test-ref-store.c

@@ -123,9 +123,10 @@ static int cmd_resolve_ref(struct ref_store *refs, const char **argv)
 	int resolve_flags = arg_flags(*argv++, "resolve-flags");
 	int flags;
 	const char *ref;
+	int ignore_errno;
 
-	ref = refs_resolve_ref_unsafe(refs, refname, resolve_flags,
-				      &oid, &flags);
+	ref = refs_werrres_ref_unsafe(refs, refname, resolve_flags,
+				      &oid, &flags, &ignore_errno);
 	printf("%s %s 0x%x\n", oid_to_hex(&oid), ref ? ref : "(null)", flags);
 	return ref ? 0 : 1;
 }