[PATCH] USB: kfree cleanup for drivers/usb/* - no need to check for NULL

Get rid of a bunch of redundant NULL pointer checks in drivers/usb/*,
there's no need to check a pointer for NULL before calling kfree() on it.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>


Index: gregkh-2.6/drivers/usb/class/audio.c
===================================================================
diff --git a/drivers/usb/media/usbvideo.c b/drivers/usb/media/usbvideo.c
index 298484a..24efb21 100644
--- a/drivers/usb/media/usbvideo.c
+++ b/drivers/usb/media/usbvideo.c
@@ -1169,10 +1169,8 @@
 			}
 			RingQueue_Free(&uvd->dp);
 			for (i=0; i < USBVIDEO_NUMSBUF; i++) {
-				if (uvd->sbuf[i].data != NULL) {
-					kfree (uvd->sbuf[i].data);
-					uvd->sbuf[i].data = NULL;
-				}
+				kfree(uvd->sbuf[i].data);
+				uvd->sbuf[i].data = NULL;
 			}
 		}
 	}