sample: Fix a possible buffer overrun.
sample: Fix a possible buffer overrun.

sebadoom/libssh,mwgoldsmith/ssh,wangshawn/libssh,elastichosts/libssh,nviennot/libssh,DouglasHeriot/libssh,robxu9/libssh,taikoo/libssh,taikoo/libssh,mwgoldsmith/libssh,Distrotech/libssh,pouete/libssh,robxu9/libssh,nviennot/libssh,pouete/libssh,nviennot/libssh,Distrotech/libssh,sebadoom/libssh,taikoo/libssh,mwgoldsmith/libssh,bigcat26/libssh-mod,sebadoom/libssh,kedazo/libssh,robxu9/libssh,pouete/libssh,DouglasHeriot/libssh,mwgoldsmith/ssh,kedazo/libssh,Distrotech/libssh,elastichosts/libssh,mwgoldsmith/libssh,Distrotech/libssh,bigcat26/libssh-mod,mwgoldsmith/libssh,DouglasHeriot/libssh,pouete/libssh,kedazo/libssh,DouglasHeriot/libssh,wangshawn/libssh,taikoo/libssh,elastichosts/libssh,bigcat26/libssh-mod,wangshawn/libssh,robxu9/libssh,sebadoom/libssh,mwgoldsmith/ssh,mwgoldsmith/ssh,nviennot/libssh,bigcat26/libssh-mod,wangshawn/libssh,kedazo/libssh