configure.ac: Bump gdk-pixbuf required version

gdk-pixbuf 2.22.0 relies on G_CONST_RETURN which is deprecated by now.
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=656421

diff --git a/configure.ac b/configure.ac
index 0f4386ccbe68751f1d7e621ac0b89343c8b2a3d7..8fee1a82376cdd36ce53ee07f339feec2a52065a 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -43,7 +43,7 @@ m4_define([glib_required_version], [2.29.14])
 m4_define([pango_required_version], [1.29.0])
 m4_define([atk_required_version], [1.30])
 m4_define([cairo_required_version], [1.10.0])
-m4_define([gdk_pixbuf_required_version], [2.22.0])
+m4_define([gdk_pixbuf_required_version], [2.23.5])
 m4_define([introspection_required_version], [0.10.1])
 GLIB_REQUIRED_VERSION=glib_required_version
 PANGO_REQUIRED_VERSION=pango_required_version