sms-forward: update initialization of empty array

Having the parenthesis here is important for valid syntax!

Author: eworm-de

sms-forward

@@ -33,7 +33,7 @@ $WaitFullyConnected;
 :while ([ :len [ /tool/sms/inbox/find ] ] > 0) do={
   :local Phone [ /tool/sms/inbox/get ([ find ]->0) phone ];
   :local Messages "";
-  :local Delete [ :toarray "" ];
+  :local Delete ({});
 
   :foreach Sms in=[ /tool/sms/inbox/find where phone=$Phone ] do={
     :local SmsVal [ /tool/sms/inbox/get $Sms ];