Fix setting initial value of wxSpinCtrl in wxQt

When creating a QSpinBox, the range must be set before setting the
initial value as otherwise setting it would fail if it were outside of
the default [0, 99] range.

This fixes a test failure in the corresponding unit test.

Closes https://github.com/wxWidgets/wxWidgets/pull/1041

src/qt/spinctrl.cpp

@@ -42,8 +42,8 @@ bool wxSpinCtrlQt< T, Widget >::Create( wxWindow *parent, wxWindowID id,
 
     m_qtSpinBox->setAccelerated(true); // to match gtk behavior
 
-    SetValue( initial );
     SetRange( min, max );
+    SetValue( initial );
     SetIncrement( inc );
 
     if ( !value.IsEmpty() )