Fix empty value error for PHP 8.1

application/controllers/Awards.php

@@ -245,6 +245,7 @@ class Awards extends CI_Controller {
 	public function qso_details_ajax(){
 		$this->load->model('logbook_model');
 
+		$qsl = '';
 		$searchphrase = str_replace('"', "", $this->input->post("Searchphrase"));
 		$band = str_replace('"', "", $this->input->post("Band"));
 		$mode = str_replace('"', "", $this->input->post("Mode"));