Don't set value unnecessarily in wxSpinCtrl::Create() in wxMSW.

This is not only unnecessary but also results in an unexpected event (which
could be avoided by using ChangeValue() but why bother calling it at all if we
don't need to).

Closes #13589.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70800 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/spinctrl.cpp

@@ -394,14 +394,15 @@ bool wxSpinCtrl::Create(wxWindow *parent,
     // Set the range in the native control
     SetRange(min, max);
 
-    if ( !value.empty() )
+    // If necessary, set the textual value. Don't do it if it's the same as the
+    // numeric value though.
+    if ( value != wxString::Format("%d", initial) )
     {
         SetValue(value);
         m_oldValue = (int) wxAtol(value);
     }
     else
     {
-        SetValue(wxString::Format(wxT("%d"), initial));
         m_oldValue = initial;
     }