Add more error checks to privatekey_file_to_buffer().
Add more error checks to privatekey_file_to_buffer().


git-svn-id: b1dee0d48e635e16c3b356ce77271b225d4db9f7@559 7dcaeef0-15fb-0310-b436-a5af3365683c

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