[PD] remove more superfluous nullptr checks

src/Mod/PartDesign/Gui/TaskLinearPatternParameters.cpp

@@ -141,7 +141,7 @@ void TaskLinearPatternParameters::setupUI()
     // Fill data into dialog elements
     for (std::vector<App::DocumentObject*>::const_iterator i = originals.begin(); i != originals.end(); ++i) {
         const App::DocumentObject* obj = *i;
-        if (obj != nullptr) {
+        if (obj) {
             QListWidgetItem* item = new QListWidgetItem();
             item->setText(QString::fromUtf8(obj->Label.getValue()));
             item->setData(Qt::UserRole, QString::fromLatin1(obj->getNameInDocument()));