[Part] - Fix memory leaks

src/Gui/ViewProviderLine.cpp

@@ -68,13 +68,11 @@ void ViewProviderLine::attach ( App::DocumentObject *obj ) {
     sep->addChild ( pCoords );
 
     SoIndexedLineSet *pLines  = new SoIndexedLineSet ();
-    pLines->ref();
     pLines->coordIndex.setNum(3);
     pLines->coordIndex.setValues(0, 3, lines);
     sep->addChild ( pLines );
 
     SoTranslation *textTranslation = new SoTranslation ();
-    textTranslation->ref ();
     textTranslation->translation.setValue ( SbVec3f ( -size * 49. / 50., size / 30., 0 ) );
     sep->addChild ( textTranslation );
 

src/Gui/ViewProviderPlane.cpp

@@ -70,13 +70,11 @@ void ViewProviderPlane::attach ( App::DocumentObject *obj ) {
     sep->addChild ( pCoords );
 
     SoIndexedLineSet *pLines  = new SoIndexedLineSet ();
-    pLines->ref();
     pLines->coordIndex.setNum(6);
     pLines->coordIndex.setValues(0, 6, lines);
     sep->addChild ( pLines );
 
     SoTranslation *textTranslation = new SoTranslation ();
-    textTranslation->ref ();
     textTranslation->translation.setValue ( SbVec3f ( -size * 49. / 50., size * 9./10., 0 ) );
     sep->addChild ( textTranslation );
 

src/Mod/Part/App/PropertyGeometryList.cpp

@@ -226,7 +226,7 @@ void PropertyGeometryList::Restore(Base::XMLReader &reader)
     reader.readEndElement("GeometryList");
 
     // assignment
-    setValues(values);
+    setValues(std::move(values));
 }
 
 App::Property *PropertyGeometryList::Copy(void) const