From d9eb9eda60389ed24bfce34c8cec74f2bb904ec3 Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Mon, 13 Aug 2012 21:31:41 +0200
Subject: [PATCH] Add missing check

---
 src/ol/control/attribution.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/ol/control/attribution.js b/src/ol/control/attribution.js
index 1b45e36ef2..8157301ff1 100644
--- a/src/ol/control/attribution.js
+++ b/src/ol/control/attribution.js
@@ -116,6 +116,7 @@ ol.control.Attribution.prototype.createAttributionElementsForLayer_ =
 
     if (!map.isDef ||
         !layerVisible ||
+        goog.isNull(attributionVisibilities) ||
         !attributionVisibilities[attributionKey]) {
       goog.style.showElement(attributionElement, false);
     }