httpserver: Don't close stdout or stderr when closing logs (fix #1471)
httpserver: Don't close stdout or stderr when closing logs (fix #1471)

captncraig/caddy,yukimochi/caddy,dusty/caddy,devangels/caddy,joshix/caddy,dusty/caddy,devangels/caddy,captncraig/caddy,cez81/caddy,dusty/caddy,cez81/caddy,tobya/caddy,cez81/caddy,joshix/caddy,captncraig/caddy,tobya/caddy,yukimochi/caddy,dusty/caddy,tobya/caddy,joshix/caddy,yukimochi/caddy,devangels/caddy,tobya/caddy