Revert "xfrm: Fix stack-out-of-bounds read in xfrm_state_find."

commit 94802151 upstream.

This reverts commit c9f3f813.

This commit breaks transport mode when the policy template
has widlcard addresses configured, so revert it.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Cc: From: Derek Robson <robsonde@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>