Don't call updatePending() if the pending count hasn't changed. See #19905.

Stops a zero pending count bubble being shown when unspamming and approved comment
when there are no pending comments.


git-svn-id: http://svn.automattic.com/wordpress/trunk@20535 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/edit-comments.dev.js

@@ -185,7 +185,8 @@ setCommentsList = function() {
 			pending = -1;
 		}
 
-		updatePending(pending);
+		if ( pending )
+			updatePending(pending);
 
 		$('span.spam-count').each( function() {
 			var a = $(this), n = getCount(a) + spam;