Trim leading and trailing whitespace from rescan height when importing a privkey

src/mainwindow.cpp

@@ -1324,8 +1324,8 @@ void MainWindow::importPrivKey() {
             doImport(keysValidated);
 
             if (rescan) {
-                //TODO: verify rescanfrom is a valid integer and trim whitespace
-                rpc->rescan(pui.rescanfrom->text().toInt() , [=] (QJsonValue response){
+                //TODO: verify rescanfrom is a valid integer
+                rpc->rescan(pui.rescanfrom->text().trimmed().toInt() , [=] (QJsonValue response){
                     qDebug() << __func__ << ":rescanning from height " << pui.rescanfrom->text().toInt() << " finished" << response;
                     ui->statusBar->showMessage(tr("Rescanning finished"), 5000);
                 });