remove resolve countries build configuration from the public API (make linking easier)

src/peer_connection.cpp

@@ -3705,6 +3705,8 @@ namespace libtorrent
 #ifndef TORRENT_DISABLE_RESOLVE_COUNTRIES	
 		p.country[0] = m_country[0];
 		p.country[1] = m_country[1];
+#else
+		std::fill(p.country, p.country + 2, 0);
 #endif
 
 		p.total_download = statistics().total_payload_download();