Add NULL check to ssh_message_free().
Add NULL check to ssh_message_free().


git-svn-id: b1dee0d48e635e16c3b356ce77271b225d4db9f7@384 7dcaeef0-15fb-0310-b436-a5af3365683c

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