messages: Fix two ssh_buffer_unpack().
messages: Fix two ssh_buffer_unpack().

Signed-off-by: Andreas Schneider <5be00ddc76278cf6077f5047ca3384a88460c671@cryptomilk.org>
Reviewed-by: Aris Adamantiadis <78e305742ac743ecf22d8139502576ac8709e0ad@0xbadc0de.be>

sebadoom/libssh,Distrotech/libssh,mwgoldsmith/ssh,Distrotech/libssh,taikoo/libssh,sebadoom/libssh,wangshawn/libssh,sebadoom/libssh,Distrotech/libssh,nviennot/libssh,taikoo/libssh,mwgoldsmith/ssh,wangshawn/libssh,taikoo/libssh,robxu9/libssh,mwgoldsmith/libssh,mwgoldsmith/ssh,pouete/libssh,wangshawn/libssh,robxu9/libssh,pouete/libssh,wangshawn/libssh,DouglasHeriot/libssh,robxu9/libssh,pouete/libssh,nviennot/libssh,mwgoldsmith/libssh,Distrotech/libssh,kedazo/libssh,mwgoldsmith/libssh,DouglasHeriot/libssh,robxu9/libssh,mwgoldsmith/libssh,nviennot/libssh,sebadoom/libssh,nviennot/libssh,pouete/libssh,kedazo/libssh,mwgoldsmith/ssh,taikoo/libssh,kedazo/libssh,DouglasHeriot/libssh,DouglasHeriot/libssh,kedazo/libssh