Improve ssh_disconnect().
Improve ssh_disconnect().


git-svn-id: b1dee0d48e635e16c3b356ce77271b225d4db9f7@490 7dcaeef0-15fb-0310-b436-a5af3365683c

mwgoldsmith/ssh,bigcat26/libssh-mod,rofl0r/libssh,wangshawn/libssh,rofl0r/libssh,jahrome/libssh,elastichosts/libssh,jt1/honeypot-libssh,bigcat26/libssh-mod,elastichosts/libssh,mwgoldsmith/libssh,mwgoldsmith/libssh,Distrotech/libssh,taikoo/libssh,wangshawn/libssh,jt1/honeypot-libssh,jahrome/libssh,mwgoldsmith/libssh,robxu9/libssh,substack/libssh,pouete/libssh,kedazo/libssh,jt1/honeypot-libssh,sebadoom/libssh,nviennot/libssh,rofl0r/libssh,substack/libssh,DouglasHeriot/libssh,miloj/libssh-v0.5,robxu9/libssh,bigcat26/libssh-mod,miloj/libssh-v0.5,nviennot/libssh,kedazo/libssh,taikoo/libssh,nviennot/libssh,pouete/libssh,rofl0r/libssh,DouglasHeriot/libssh,miloj/libssh-v0.5,robxu9/libssh,mwgoldsmith/ssh,substack/libssh,miloj/libssh-v0.5,DouglasHeriot/libssh,Distrotech/libssh,mwgoldsmith/ssh,mwgoldsmith/libssh,jahrome/libssh,wangshawn/libssh,robxu9/libssh,wangshawn/libssh,sebadoom/libssh,pouete/libssh,mwgoldsmith/ssh,sebadoom/libssh,jahrome/libssh,nviennot/libssh,sebadoom/libssh,Distrotech/libssh,Distrotech/libssh,pouete/libssh,elastichosts/libssh,taikoo/libssh,kedazo/libssh,jt1/honeypot-libssh,taikoo/libssh,DouglasHeriot/libssh,substack/libssh,kedazo/libssh,bigcat26/libssh-mod