pigeon_publish_raw: use capnp::Data::Reader instead of Builder (#19952)

old-commit-hash: b0c8ce4863

selfdrive/boardd/boardd.cc

@@ -458,8 +458,7 @@ void hardware_control_thread() {
 static void pigeon_publish_raw(PubMaster &pm, const std::string &dat) {
   // create message
   MessageBuilder msg;
-  capnp::Data::Builder ublox_row((uint8_t*)dat.data(), dat.length());
-  msg.initEvent().setUbloxRaw(ublox_row);
+  msg.initEvent().setUbloxRaw(capnp::Data::Reader((uint8_t*)dat.data(), dat.length()));
   pm.send("ubloxRaw", msg);
 }