Fix a couple of clazy warnings

.clazy

@@ -1 +1 @@
-CHECKS level2,detaching-member,heap-allocated-small-trivial-type,isempty-vs-count,qstring-varargs,qvariant-template-instantiation,raw-environment-function,reserve-candidates,signal-with-return-value,thread-with-slots
+CHECKS level2,detaching-member,heap-allocated-small-trivial-type,isempty-vs-count,qstring-varargs,qvariant-template-instantiation,raw-environment-function,reserve-candidates,signal-with-return-value,thread-with-slots,no-ctor-missing-parent-argument,no-missing-qobject-macro

examples/dockwidgets/MyMainWindow.cpp

@@ -27,6 +27,8 @@
 #include <stdlib.h>
 #include <time.h>
 
+// clazy:excludeall=qstring-allocations
+
 static MyWidget *newMyWidget()
 {
 #if QT_VERSION < QT_VERSION_CHECK(5, 10, 0)

src/private/multisplitter/Item.cpp

@@ -2918,8 +2918,8 @@ SizingInfo::List ItemContainer::sizes(bool ignoreBeingInserted) const
     return result;
 }
 
-QVector<int> ItemContainer::calculateSqueezes(SizingInfo::List::ConstIterator begin,
+QVector<int> ItemContainer::calculateSqueezes(SizingInfo::List::ConstIterator begin,  //clazy:exclude=function-args-by-ref
-                                              SizingInfo::List::ConstIterator end, int needed,
+                                              SizingInfo::List::ConstIterator end, int needed,  //clazy:exclude=function-args-by-ref
                                               NeighbourSqueezeStrategy strategy, bool reversed) const
 {
     QVector<int> availabilities;

src/private/multisplitter/Separator_qwidget.cpp

@@ -24,7 +24,7 @@ namespace Layouting {
 class RubberBand : public QRubberBand
                  , public Layouting::Widget_qwidget
 {
-
+Q_OBJECT
 public:
     RubberBand(Layouting::Widget *parent)
         : QRubberBand(QRubberBand::Line, parent ? parent->asQWidget() : nullptr)
@@ -107,3 +107,5 @@ Widget *SeparatorWidget::asWidget()
 {
     return this;
 }
+
+#include <Separator_qwidget.moc>