From 92487d5e9e3cb01233d2bb7267c4071f3ac953e3 Mon Sep 17 00:00:00 2001
From: Richard Hughes <richard@hughsie.com>
Date: Wed, 21 Feb 2018 12:00:13 +0000
Subject: Treat pngquant exit code of 98 (nothing done) as success

Fixes https://github.com/hughsie/appstream-glib/issues/223
---
 libappstream-builder/asb-utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libappstream-builder/asb-utils.c b/libappstream-builder/asb-utils.c
index 503c379..b14f411 100644
--- a/libappstream-builder/asb-utils.c
+++ b/libappstream-builder/asb-utils.c
@@ -302,7 +302,7 @@ asb_utils_optimize_png (const gchar *filename, GError **error)
 	if (!g_spawn_sync (NULL, (gchar **) argv, NULL, G_SPAWN_DEFAULT,
 			   NULL, NULL, NULL, &standard_error, &exit_status, error))
 		return FALSE;
-	if (exit_status != 0) {
+	if (exit_status != 0 && exit_status != 98) {
 		g_autofree gchar *argv_str = g_strjoinv (" ", (gchar **) argv);
 		g_set_error (error,
 			     AS_APP_ERROR,
-- 
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