Add the ability to choose the save path when using magnet links

src/torrentadditiondlg.cpp

@@ -200,8 +200,8 @@ void torrentAdditionDialog::showLoadMagnetURI(QString magnet_uri) {
 
   // Disable Save path combox and browse button
   // Save path should be default for magnet links
-  savePathTxt->setEnabled(false);
-  browseButton->setEnabled(false);
+  savePathTxt->setEnabled(true);
+  browseButton->setEnabled(true);
 
   // Get torrent hash
   hash = misc::magnetUriToHash(magnet_uri);
@@ -528,10 +528,10 @@ void torrentAdditionDialog::updateDiskSpaceLabels() {
 }
 
 void torrentAdditionDialog::on_browseButton_clicked() {
-  Q_ASSERT(!is_magnet);
   QString new_path;
   QString root_folder;
   const QString label_name = comboLabel->currentText();
+  if (!is_magnet) {
     if (t->num_files() == 1) {
       new_path = QFileDialog::getSaveFileName(this, tr("Choose save path"), savePathTxt->currentText(), QString(), 0, QFileDialog::DontConfirmOverwrite);
       if (!new_path.isEmpty()) {
@@ -545,6 +545,7 @@ void torrentAdditionDialog::on_browseButton_clicked() {
         // Construct new_path
         new_path = path_parts.join(QDir::separator());
       }
+    }
   } else {
     QString truncated_path = getCurrentTruncatedSavePath(&root_folder);
     if (!truncated_path.isEmpty() && QDir(truncated_path).exists()) {