tty-usb-sierra: Coding style - minor

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 892020d..2f6f152 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -757,7 +757,7 @@
 
 static void __exit sierra_exit(void)
 {
-	usb_deregister (&sierra_driver);
+	usb_deregister(&sierra_driver);
 	usb_serial_deregister(&sierra_device);
 }