Set marks used in wxMSW wxCalendarCtrl unconditionally.

This fixes wrong display (random days could have been shown marked) when not
using wxCAL_SHOW_HOLIDAYS style. Apparently we need to set the marks
unconditionally as they are not turned off by default, so ensure we call
UpdateMarks() even without wxCAL_SHOW_HOLIDAYS.

See #13934.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70567 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/calctrl.cpp

@@ -120,7 +120,7 @@ wxCalendarCtrl::Create(wxWindow *parent,
 
     SetDate(dt.IsValid() ? dt : wxDateTime::Today());
 
-    if ( SetHolidayAttrs() )
+    SetHolidayAttrs();
     UpdateMarks();
 
     Connect(wxEVT_LEFT_DOWN,
@@ -462,7 +462,7 @@ bool wxCalendarCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
                     {
                         // month changed, need to update the holidays if we use
                         // them
-                        if ( SetHolidayAttrs() )
+                        SetHolidayAttrs();
                         UpdateMarks();
                     }
                 }