USB: remove unnecessary type casting of urb->context

urb->context code cleanup

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index db55ec3..6610d2dd 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -110,7 +110,7 @@
  */
 static void usb_stor_blocking_completion(struct urb *urb)
 {
-	struct completion *urb_done_ptr = (struct completion *)urb->context;
+	struct completion *urb_done_ptr = urb->context;
 
 	complete(urb_done_ptr);
 }