Luis Henriques reported that while backporting commit 40eea803 ("net:
sendmsg: fix NULL pointer dereference") and applying the diff by hand,
I made a typo resulting in the same test being done twice, and msg_name
not being tested.

This fixes cf903573 ("net: sendmsg: fix NULL pointer dereference")
which was merged into 2.6.32.64.

Cc: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Luis Henriques <luis.henriques@canonical.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>