ERP5ShortMessage: fix some python3 syntax errors

product/ERP5ShortMessage/Document/MobytGateway.py

@@ -189,7 +189,7 @@ class MobytGateway(XMLObject):
         return [result.get('status_info', "")] #return message id (gateway side)
       elif result['status'] == "KO":
         #we get an error when call the gateway
-        raise SMSGatewayError, urllib.unquote(result.get('status_info', "Impossible to send the SMS"))
+        raise SMSGatewayError(urllib.unquote(result.get('status_info', "Impossible to send the SMS")))
       elif result['status'] == "Test":
         #just a test, no message id
         return None
@@ -224,7 +224,7 @@ class MobytGateway(XMLObject):
 
       elif result['status'] == "KO":
         #we get an error when call the gateway
-        raise SMSGatewayError, urllib.unquote(result.get('status_info', "Impossible to get the message status"))
+        raise SMSGatewayError(urllib.unquote(result.get('status_info', "Impossible to get the message status")))
 
     security.declarePublic('receive')
     def receive(self,REQUEST):