Fix lookups for empty contest sessions

application/controllers/Contesting.php

@@ -188,7 +188,7 @@ class Contesting extends CI_Controller {
 		$result = $this->Contesting_model->checkIfWorkedBefore($call, $band, $mode, $contest);
 		
 		header('Content-Type: application/json');
-		if ($result->num_rows()) {
+		if ($result && $result->num_rows()) {
 			echo json_encode(array('message' => 'Worked before'));
 		}
 		return;

application/models/Contesting_model.php

@@ -214,7 +214,7 @@ class Contesting_model extends CI_Model {
 
 		$contest_session = $this->getSession();
 		
-		if ($contest_session) {
+		if ($contest_session && $contest_session->qso != "") {
 			$qsoarray = explode(',', $contest_session->qso);
 	
 			$date = DateTime::createFromFormat('d-m-Y H:i:s', $qsoarray[0]);