skip blank params in init-params output

functions.php

@@ -1896,10 +1896,12 @@
 		print "<init-params>";
 		if ($_SESSION["stored-params"]) {
 			foreach (array_keys($_SESSION["stored-params"]) as $key) {
+				if ($key) {
 					$value = htmlspecialchars($_SESSION["stored-params"][$key]);
 					print "<param key=\"$key\" value=\"$value\"/>";
 				}
 			}
+		}
 
 		print "<param key=\"daemon_enabled\" value=\"" . ENABLE_UPDATE_DAEMON . "\"/>";
 		print "<param key=\"feeds_frame_refresh\" value=\"" . FEEDS_FRAME_REFRESH . "\"/>";