r8152: fix the warnings and a error from checkpatch.pl
authorhayeswang <hayeswang@realtek.com>
Wed, 15 Jan 2014 02:42:15 +0000 (10:42 +0800)
committerDavid S. Miller <davem@davemloft.net>
Wed, 15 Jan 2014 02:48:54 +0000 (18:48 -0800)
Fix the following warnings and error:
 - WARNING: usb_free_urb(NULL) is safe this check is probably not required
 - WARNING: kfree(NULL) is safe this check is probably not required
 - ERROR: do not use C99 // comments

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/usb/r8152.c

Simple merge