Part: modernize C++: return braced init list

src/Mod/PartDesign/Gui/TaskSketchBasedParameters.cpp

@@ -135,7 +135,7 @@ void TaskSketchBasedParameters::exitSelectionMode()
 QVariant TaskSketchBasedParameters::setUpToFace(const QString& text)
 {
     if (text.isEmpty())
-        return QVariant();
+        return {};
 
     QStringList parts = text.split(QChar::fromLatin1(':'));
     if (parts.length() < 2)
@@ -144,15 +144,15 @@ QVariant TaskSketchBasedParameters::setUpToFace(const QString& text)
     // Check whether this is the name of an App::Plane or Part::Datum feature
     App::DocumentObject* obj = vp->getObject()->getDocument()->getObject(parts[0].toLatin1());
     if (!obj)
-        return QVariant();
+        return {};
 
     if (obj->getTypeId().isDerivedFrom(App::Plane::getClassTypeId())) {
         // everything is OK (we assume a Part can only have exactly 3 App::Plane objects located at the base of the feature tree)
-        return QVariant();
+        return {};
     }
     else if (obj->getTypeId().isDerivedFrom(Part::Datum::getClassTypeId())) {
         // it's up to the document to check that the datum plane is in the same body
-        return QVariant();
+        return {};
     }
     else {
         // We must expect that "parts[1]" is the translation of "Face" followed by an ID.
@@ -162,7 +162,7 @@ QVariant TaskSketchBasedParameters::setUpToFace(const QString& text)
         QRegularExpression rx(name);
         QRegularExpressionMatch match;
         if (parts[1].indexOf(rx, 0, &match) < 0) {
-            return QVariant();
+            return {};
         }
 
         int faceId = match.captured(1).toInt();
@@ -200,7 +200,7 @@ QVariant TaskSketchBasedParameters::objectNameByLabel(const QString& label,
         }
     }
 
-    return QVariant(); // no such feature found
+    return {}; // no such feature found
 }
 
 QString TaskSketchBasedParameters::getFaceReference(const QString& obj, const QString& sub) const
@@ -209,7 +209,7 @@ QString TaskSketchBasedParameters::getFaceReference(const QString& obj, const QS
     QString o = obj.left(obj.indexOf(QString::fromLatin1(":")));
 
     if (o.isEmpty())
-        return QString();
+        return {};
 
     return QString::fromLatin1(R"((App.getDocument("%1").%2, ["%3"]))")
             .arg(QString::fromLatin1(doc->getName()), o, sub);
@@ -223,7 +223,7 @@ QString TaskSketchBasedParameters::make2DLabel(const App::DocumentObject* sectio
     }
     else if (subValues.empty()) {
         Base::Console().Error("No valid subelement linked in %s\n", section->Label.getValue());
-        return QString();
+        return {};
     }
     else {
         return QString::fromStdString((std::string(section->getNameInDocument()) + ":" + subValues[0]));