Fix a bug where username from old sucs site was not properly 'imported'

public/index.php

@@ -92,6 +92,7 @@ if ( isset($_POST["username"]) && isset($_POST["password"]) && !$RATELIMITED ) {
 		// we have a vlid username from a old session
 		$DB_CON->exec("UPDATE sessions SET sucs_username='${username}' WHERE id='${SESSIONID}'");
 		$SUCS_LOGIN = true;
+		$details["sucs_username"] = $username;
 	}
 
 }