include wx/sizer.h as buildbot complained

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65437 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/ribbon/panel.cpp b/src/ribbon/panel.cpp
index 512ec8ae3296567f0be0d100251d2857daa27323..a590c9b8f0785c79c4b10e285107b6ffebaf13d3 100644 (file)
--- a/src/ribbon/panel.cpp
+++ b/src/ribbon/panel.cpp
@@ -22,6 +22,7 @@
 #include "wx/ribbon/bar.h"
 #include "wx/dcbuffer.h"
 #include "wx/display.h"
+#include "wx/sizer.h"
 
 #ifndef WX_PRECOMP
 #include "wx/frame.h"