Fix to bug introduced recently where images would be shown as missing icons and require a CTRL+refresh to show correctly.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@5759 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/web/ui/common/Utils.java

@@ -1276,6 +1276,7 @@ public final class Utils
                {
                   // not found, save the default image for this extension instead
                   s_fileExtensionMap.put(key, defaultImage);
+                  image = defaultImage;
                }
             }
          }