Fix autotest by partially reverting 298a8e32

Autotests tend to fail when you comment out the function being tested.

src/autotests/placeitemtest.cpp

@@ -136,7 +136,7 @@ void PlaceItemTest::fillLeftGap()
     auto item2 = std::make_unique<TestItem>("item2", 1, 3, 1, 2);
     const QList<CellItem *> cells({item1.get(), item2.get()});
     auto newItem = std::make_unique<TestItem>("new", 2, 4);
-    // auto overlappers = CellItem::placeItem(cells, newItem.get());
+    (void) CellItem::placeItem(cells, newItem.get());
     QCOMPARE(newItem->subCell(), item1->subCell());
     QCOMPARE(newItem->subCells(), 2);
 }
@@ -152,7 +152,7 @@ void PlaceItemTest::fillCenterGap()
     auto item3 = std::make_unique<TestItem>("item3", 1, 3, 2, 3);
     const QList<CellItem *> cells({item1.get(), item2.get(), item3.get()});
     auto newItem= std::make_unique<TestItem>("new", 2, 4);
-    // auto overlappers = CellItem::placeItem(cells, newItem.get());
+    (void) CellItem::placeItem(cells, newItem.get());
     QCOMPARE(newItem->subCell(), item1->subCell());
     QCOMPARE(newItem->subCells(), 3);
 }
@@ -170,7 +170,7 @@ void PlaceItemTest::transitiveOverlap()
     auto item3 = std::make_unique<TestItem>("item3", 1, 3, 1, 2);
     const QList<CellItem *> cells({item1.get(), item2.get(), item3.get()});
     auto newItem= std::make_unique<TestItem>("new", 2, 4);
-    // auto overlappers = CellItem::placeItem(cells, newItem.get());
+    (void) CellItem::placeItem(cells, newItem.get());
     QCOMPARE(newItem->subCells(), 3);
     QCOMPARE(item1->subCells(), 3);
     QCOMPARE(item2->subCells(), 3);