[pki] Fixed a probable bug in privatekey_file_to_buffer()
[pki] Fixed a probable bug in privatekey_file_to_buffer()

sebadoom/libssh,taikoo/libssh,robxu9/libssh,pouete/libssh,nviennot/libssh,bigcat26/libssh-mod,bigcat26/libssh-mod,kedazo/libssh,kedazo/libssh,mwgoldsmith/libssh,elastichosts/libssh,sebadoom/libssh,rofl0r/libssh,bigcat26/libssh-mod,jt1/honeypot-libssh,sebadoom/libssh,mwgoldsmith/libssh,pouete/libssh,kedazo/libssh,mwgoldsmith/libssh,Distrotech/libssh,DouglasHeriot/libssh,nviennot/libssh,jt1/honeypot-libssh,sebadoom/libssh,pouete/libssh,pouete/libssh,Distrotech/libssh,Distrotech/libssh,taikoo/libssh,mwgoldsmith/ssh,wangshawn/libssh,wangshawn/libssh,jt1/honeypot-libssh,taikoo/libssh,taikoo/libssh,wangshawn/libssh,mwgoldsmith/libssh,wangshawn/libssh,robxu9/libssh,bigcat26/libssh-mod,rofl0r/libssh,robxu9/libssh,mwgoldsmith/ssh,elastichosts/libssh,elastichosts/libssh,Distrotech/libssh,nviennot/libssh,robxu9/libssh,mwgoldsmith/ssh,mwgoldsmith/ssh,DouglasHeriot/libssh,DouglasHeriot/libssh,rofl0r/libssh,nviennot/libssh,jt1/honeypot-libssh,DouglasHeriot/libssh,kedazo/libssh,rofl0r/libssh