sftp: Fix a memory on error in sftp_opendir().
sftp: Fix a memory on error in sftp_opendir().

elastichosts/libssh,kedazo/libssh,nviennot/libssh,nviennot/libssh,robxu9/libssh,wangshawn/libssh,DouglasHeriot/libssh,taikoo/libssh,nviennot/libssh,sebadoom/libssh,mwgoldsmith/ssh,mwgoldsmith/ssh,jt1/honeypot-libssh,bigcat26/libssh-mod,Distrotech/libssh,taikoo/libssh,taikoo/libssh,bigcat26/libssh-mod,robxu9/libssh,mwgoldsmith/libssh,pouete/libssh,pouete/libssh,sebadoom/libssh,pouete/libssh,sebadoom/libssh,wangshawn/libssh,DouglasHeriot/libssh,nviennot/libssh,kedazo/libssh,mwgoldsmith/ssh,jt1/honeypot-libssh,bigcat26/libssh-mod,jt1/honeypot-libssh,taikoo/libssh,pouete/libssh,mwgoldsmith/libssh,wangshawn/libssh,mwgoldsmith/libssh,robxu9/libssh,elastichosts/libssh,sebadoom/libssh,wangshawn/libssh,mwgoldsmith/libssh,mwgoldsmith/ssh,DouglasHeriot/libssh,kedazo/libssh,kedazo/libssh,Distrotech/libssh,robxu9/libssh,DouglasHeriot/libssh,jt1/honeypot-libssh,bigcat26/libssh-mod,elastichosts/libssh,Distrotech/libssh,Distrotech/libssh