This patch has been hanging around for a while and seems to have been
forgotten.  It fixes a bug in the USB scatter-gather library that crops up
when submission of an URB fails, and it fixes a bug in the cleanup routine
when some of the URBs being cleaned up have already completed.

I think David will agree that the patch is correct.  Please apply.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>