Use closesocket in server.c for win32
Use closesocket in server.c for win32

Resolves #56

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