proxycommand: check the return values of pipe().
proxycommand: check the return values of pipe().

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