recvmsg01: Fix test for invalid message flags

This is the same fix as in:

commit 1153a8438fe45530eb480d902271476c2e330663
Author: Chuck Ebbert <cebbert.lkml@gmail.com>
Date:   Wed Oct 1 17:10:32 2014 -0500

    recvfrom01: fix test for invalid message flags

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
recv01: fix test for invalid message flags

This is the same fix as in:

commit 1153a8438fe45530eb480d902271476c2e330663
Author: Chuck Ebbert <cebbert.lkml@gmail.com>
Date:   Wed Oct 1 17:10:32 2014 -0500

    recvfrom01: fix test for invalid message flags

Signed-off-by: Cyril Hrubis <chrubis@suse.cz>