Improve sftp_close().
Improve sftp_close().


git-svn-id: b1dee0d48e635e16c3b356ce77271b225d4db9f7@599 7dcaeef0-15fb-0310-b436-a5af3365683c

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