remove memory leak in create_jwt() (#20547)

selfdrive/ui/qt/api.cc

@@ -72,10 +72,6 @@ QString CommaApi::create_jwt(QVector<QPair<QString, QJsonValue>> payloads, int e
   return jwt;
 }
 
-QString CommaApi::create_jwt() {
-  return create_jwt(*(new QVector<QPair<QString, QJsonValue>>()));
-}
-
 RequestRepeater::RequestRepeater(QWidget* parent, QString requestURL, int period_seconds, const QString &cache_key, bool disableWithScreen)
   : disableWithScreen(disableWithScreen), cache_key(cache_key), QObject(parent)  {
   networkAccessManager = new QNetworkAccessManager(this);
@@ -104,7 +100,7 @@ void RequestRepeater::sendRequest(QString requestURL){
     return;
   }
 
-  QString token = CommaApi::create_jwt({});
+  QString token = CommaApi::create_jwt();
   QNetworkRequest request;
   request.setUrl(QUrl(requestURL));
   request.setRawHeader(QByteArray("Authorization"), ("JWT " + token).toUtf8());

selfdrive/ui/qt/api.hpp

@@ -19,8 +19,7 @@ class CommaApi : public QObject {
 
 public:
   static QByteArray rsa_sign(QByteArray data);
-  static QString create_jwt(QVector<QPair<QString, QJsonValue>> payloads, int expiry=3600);
-  static QString create_jwt();
+  static QString create_jwt(QVector<QPair<QString, QJsonValue>> payloads = {}, int expiry=3600);
 
 private:
   QNetworkAccessManager* networkAccessManager;

selfdrive/ui/qt/widgets/setup.cc

@@ -37,9 +37,7 @@ void PairingQRWidget::refresh(){
     qrCode->setStyleSheet(R"(font-size: 60px;)");
     return;
   }
-  QVector<QPair<QString, QJsonValue>> payloads;
-  payloads.push_back(qMakePair(QString("pair"), true));
-  QString pairToken = CommaApi::create_jwt(payloads);
+  QString pairToken = CommaApi::create_jwt({{"pair", true}});
 
   QString qrString = IMEI + "--" + serial + "--" + pairToken;
   this->updateQrCode(qrString);