IsStandard needs to check m_type, not m_format

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38737 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/mac/carbon/dataform.h

@@ -53,7 +53,8 @@ public:
     void SetType( wxDataFormatId type );
 
     // returns true if the format is one of those defined in wxDataFormatId
-    bool IsStandard() const { return m_format > 0 && m_format < wxDF_PRIVATE; }
+    bool IsStandard() const { return m_type > 0 && m_type < wxDF_PRIVATE; }
+    
 private:
     wxDataFormatId   m_type;
     NativeFormat     m_format;