gdm: Don't throw an error if there's no logo file

diff --git a/js/gdm/loginDialog.js b/js/gdm/loginDialog.js
index 5564d76558de0e22815e4908552768f41d3f1622..724b28b0060577a276c1cbc2933487031d02a204 100644 (file)
--- a/js/gdm/loginDialog.js
+++ b/js/gdm/loginDialog.js
@@ -538,7 +538,7 @@ const LoginDialog = new Lang.Class({
     },
 
     _updateLogoTexture: function(cache, file) {
-        if (!this._logoFile.equal(file))
+        if (this._logoFile && !this._logoFile.equal(file))
             return;
 
         this._logoBin.destroy_all_children();