fix error on empty email data

classes/emailcatcher.class.php

@@ -13,6 +13,7 @@
  * ----------------------------------------------------------------------
  * 2024-10-08  v0.1  initial version
  * 2024-10-16  v0.2  detect parse error when reading email data
+ * 2025-05-27  v0.3  fix error on empty email data
  * =======================================================================
  */
 
@@ -95,6 +96,7 @@ class emailcatcher
         if(!file_exists($this->sMailData)){
             return [];
         }
+        $aEmails=[];
         foreach(file($this->sMailData) as $line) {
 
             if (empty(trim($line))) {