Update client.cpp

std::string g_strTvgPath              = "http://iptv2.dnsentry.info/xmltv.xml.gz";
std::string g_strM3UPath              = "http://iptv2.dnsentry.info/iptv.m3u8";
std::string g_strLogoPath             = "http://iptv2.dnsentry.info/";