message: Improve HTTPFS unable to connect error
diff: @@ -190,7 +190,7 @@ void HTTPFileHandle::IntializeMetadata() {
  auto &hfs = (HTTPFileSystem &)file_system;
  auto res = hfs.Request(*this, path, "HEAD");
  if (res->code != 200) {
  - throw std::runtime_error("Unable to connect " + res->error);
  + throw std::runtime_error("Unable to connect to URL \"" + path + "\": " + res->error);
  }
  length = std::atoll(res->headers["Content-Length"].c_str());
  @@ -201,7 +201,7 @@ void HTTPFileHandle::IntializeMetadata() {
  ResponseWrapper::ResponseWrapper(httplib::Response &res) {
  code = res.status;
  - error = res.body;
  + error = res.reason;
  for (auto &h : res.headers) {
  headers[h.first] = h.second;
  }
  