opts: Fix segfault in option parser.
opts: Fix segfault in option parser.

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