feedbrowser cache: limit the amount of data cached

functions.php

@@ -5910,7 +5910,7 @@
 	  		FROM ttrss_feeds WHERE (SELECT COUNT(id) = 0 FROM ttrss_feeds AS tf 
 				WHERE tf.feed_url = ttrss_feeds.feed_url 
 				AND (private IS true OR feed_url LIKE '%:%@%/%')) 
-				GROUP BY feed_url ORDER BY subscribers DESC");
+				GROUP BY feed_url ORDER BY subscribers DESC LIMIT 200");
 	
 		db_query($link, "BEGIN");