USB: remove unneeded checks in the usb-serial core.

Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

drivers/usb/serial/usb-serial.c

@@ -452,18 +452,12 @@ static void destroy_serial(struct kref *kref)
 			port = serial->port[i];
 			if (!port)
 				continue;
-			if (port->read_urb) {
 			usb_kill_urb(port->read_urb);
 			usb_free_urb(port->read_urb);
-			}
-			if (port->write_urb) {
 			usb_kill_urb(port->write_urb);
 			usb_free_urb(port->write_urb);
-			}
-			if (port->interrupt_in_urb) {
 			usb_kill_urb(port->interrupt_in_urb);
 			usb_free_urb(port->interrupt_in_urb);
-			}
 			kfree(port->bulk_in_buffer);
 			kfree(port->bulk_out_buffer);
 			kfree(port->interrupt_in_buffer);
@@ -799,18 +793,12 @@ static void port_release(struct device *dev)
 	struct usb_serial_port *port = to_usb_serial_port(dev);
 
 	dbg ("%s - %s", __FUNCTION__, dev->bus_id);
-	if (port->read_urb) {
 	usb_kill_urb(port->read_urb);
 	usb_free_urb(port->read_urb);
-	}
-	if (port->write_urb) {
 	usb_kill_urb(port->write_urb);
 	usb_free_urb(port->write_urb);
-	}
-	if (port->interrupt_in_urb) {
 	usb_kill_urb(port->interrupt_in_urb);
 	usb_free_urb(port->interrupt_in_urb);
-	}
 	kfree(port->bulk_in_buffer);
 	kfree(port->bulk_out_buffer);
 	kfree(port->interrupt_in_buffer);