guest access tokens: xchan record not created on URL login

(cherry picked from commit 0b2213dd41)

include/channel.php

@@ -1836,6 +1836,7 @@ function zat_init() {
 	);
 	if($r) {
 		$xchan = atoken_xchan($r[0]);
+		atoken_create_xchan($xchan);
 		atoken_login($xchan);
 	}
 }