Check directly if container is empty or not

src/gui/downloadfromurldlg.h

@@ -107,7 +107,7 @@ class downloadFromURL : public QDialog, private Ui::downloadFromURL
           }
         }
       }
-      if (!url_list_cleaned.size()) {
+      if (url_list_cleaned.isEmpty()) {
         QMessageBox::warning(this, tr("No URL entered"), tr("Please type at least one URL."));
         return;
       }

src/gui/properties/propertieswidget.cpp

@@ -660,7 +660,7 @@ void PropertiesWidget::displayWebSeedListMenu(const QPoint &)
     QAction *actCpy = nullptr;
     QAction *actEdit = nullptr;
 
-    if (rows.size()) {
+    if (!rows.isEmpty()) {
         actDel = seedMenu.addAction(GuiIconProvider::instance()->getIcon("list-remove"), tr("Remove Web seed"));
         seedMenu.addSeparator();
         actCpy = seedMenu.addAction(GuiIconProvider::instance()->getIcon("edit-copy"), tr("Copy Web seed URL"));