Fix leaking the report items. CID 10880, 10881 and 10882.

src/add-ons/kernel/drivers/input/usb_hid/JoystickProtocolHandler.cpp

@@ -115,6 +115,9 @@ JoystickProtocolHandler::JoystickProtocolHandler(HIDReport &report)
 JoystickProtocolHandler::~JoystickProtocolHandler()
 {
 	free(fCurrentValues.data);
+	free(fAxis);
+	free(fHats);
+	free(fButtons);
 }