Merge branch 'pgtk' of github.com:masm11/emacs into pgtk

Author: Yuuki Harano

src/pgtkfns.c

@@ -1723,6 +1723,10 @@ parse_resource_key (const char *res_key, char *setting_key)
   /* check existence of setting_key */
   GSettingsSchemaSource *ssrc = g_settings_schema_source_get_default ();
   GSettingsSchema *scm = g_settings_schema_source_lookup (ssrc, SCHEMA_ID, FALSE);
+  if (scm == NULL) {
+    return NULL;
+  }
+
   if (!g_settings_schema_has_key (scm, setting_key)) {
     g_settings_schema_unref (scm);
     return NULL;