stddef.h required for IRIX compilation (patch 721388)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@20419 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/include/wx/hashmap.h b/include/wx/hashmap.h
index e774c0a1935b6128aa5dea18028e9225418b0606..5bd69cea774c49a365a94b3459db7231f1e38557 100644 (file)
--- a/include/wx/hashmap.h
+++ b/include/wx/hashmap.h
@@ -18,6 +18,8 @@
 
 #include "wx/string.h"
 
+#include <stddef.h>             // for ptrdiff_t
+
 // private
 struct WXDLLEXPORT _wxHashTable_NodeBase
 {