fix dash when the socket is closed using progressive download with gf_dash_download_resource()
fix dash when the socket is closed using progressive download with gf_dash_download_resource()

@jeanlf this is a hard fix which redownload from the offset 0 (e.g. everything). The issue of closed socket is at:

GF_Err gf_dm_sess_set_range(GF_DownloadSession *sess, u64 start_range, u64 end_range, Bool discontinue_cache)
{
	if (!sess) return GF_BAD_PARAM;
	if (sess->cache_entry) {
		if (!discontinue_cache) {
			if (gf_cache_get_end_range(sess->cache_entry) + 1 != start_range)
				return GF_NOT_SUPPORTED;
		}
		if (!sess->sock)
			return GF_BAD_PARAM; //XXXXXXXX SOCKET WAS CLOSED XXXXXXXX

nguyen-viet-thanh-trung/gpac,epam/gpac,emmanouil/gpac,DmitrySigaev/gpac,DmitrySigaev/gpac,aymanelyaagoubi/gpac,emmanouil/gpac,aymanelyaagoubi/gpac,rbouqueau/gpac_brew_travis,ARSekkat/gpac,gpac/gpac,rauf/gpac,DmitrySigaev/gpac,rbouqueau/gpac_brew_travis,drakeguan/gpac,RodolpheFouquet/gpac,RodolpheFouquet/gpac,psteinb/gpac,emmanouil/gpac,emmanouil/gpac,rbouqueau/gpac,emmanouil/gpac,gpac/gpac,ARSekkat/gpac,psteinb/gpac,RodolpheFouquet/gpac,aymanelyaagoubi/gpac,Bevara/Access-open,psteinb/gpac,psteinb/gpac,vladimir-kazakov/gpac,drakeguan/gpac,RodolpheFouquet/gpac,rbouqueau/gpac,RodolpheFouquet/gpac,rauf/gpac,rbouqueau/gpac,drakeguan/gpac,ARSekkat/gpac,rbouqueau/gpac_brew_travis,rbouqueau/gpac,gpac/gpac,epam/gpac,porcelijn/gpac,epam/gpac,gpac/gpac,emmanouil/gpac,porcelijn/gpac,rbouqueau/gpac,rbouqueau/gpac,vladimir-kazakov/gpac,epam/gpac,nguyen-viet-thanh-trung/gpac,vladimir-kazakov/gpac,Bevara/Access-open,ARSekkat/gpac,porcelijn/gpac,nguyen-viet-thanh-trung/gpac,RodolpheFouquet/gpac,gpac/gpac,Bevara/Access-open,nguyen-viet-thanh-trung/gpac,aymanelyaagoubi/gpac,vladimir-kazakov/gpac,rauf/gpac,drakeguan/gpac,rauf/gpac,epam/gpac,vladimir-kazakov/gpac,vladimir-kazakov/gpac,gpac/gpac,rbouqueau/gpac_brew_travis,nguyen-viet-thanh-trung/gpac,rbouqueau/gpac,Bevara/Access-open,rauf/gpac,rbouqueau/gpac_brew_travis,drakeguan/gpac,rbouqueau/gpac_brew_travis,DmitrySigaev/gpac,gpac/gpac,nguyen-viet-thanh-trung/gpac,aymanelyaagoubi/gpac,DmitrySigaev/gpac,ARSekkat/gpac,aymanelyaagoubi/gpac,psteinb/gpac,porcelijn/gpac,ARSekkat/gpac,psteinb/gpac,Bevara/Access-open,Bevara/Access-open,DmitrySigaev/gpac,gpac/gpac,porcelijn/gpac,epam/gpac,rbouqueau/gpac,rauf/gpac,porcelijn/gpac,drakeguan/gpac