CC-3588 : Cancelling Empty Show gives "Invalid Request"

airtime_mvc/application/models/Scheduler.php

@@ -560,6 +560,7 @@ class Application_Model_Scheduler {
                     ->filterByDbEnds($this->nowDT, Criteria::GREATER_THAN)
                     ->find($this->con);
                 
+                if (count($items) > 0) {
                     $remove = array();
                     $ts = $this->nowDT->format('U');
                     
@@ -570,6 +571,8 @@ class Application_Model_Scheduler {
                     }
                     
                     $this->removeItems($remove, false);
+                }
+                
                 $instance->setDbEnds($this->nowDT);
                 $instance->save($this->con);
             }