headlines-unread: fix ccache usage

backend.php

@@ -320,7 +320,8 @@
 			print "<headlines-count value=\"$headlines_count\"/>";
 			print "<vgroup-last-feed value=\"$vgroup_last_feed\"/>";
 
-			$headlines_unread = ccache_find($link, $returned_feed, $_SESSION["uid"]);
+			$headlines_unread = ccache_find($link, $returned_feed, $_SESSION["uid"],
+					$cat_view);
 
 			print "<headlines-unread value=\"$headlines_unread\"/>";
 			printf("<disable-cache value=\"%d\"/>", $disable_cache);