Add missing wxUSE_MARKUP checks in wxOSX code.

Don't define wxWidgetImpl::SetLabelMarkup() when wxUSE_MARKUP is off and
definitely don't reimplement it in wxButtonCocoaImpl as this code doesn't
compile without markup support.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67103 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/osx/core/private.h

@@ -270,7 +270,7 @@ public :
     virtual void        SetDefaultButton( bool isDefault ) = 0;
     virtual void        PerformClick() = 0;
     virtual void        SetLabel( const wxString& title, wxFontEncoding encoding ) = 0;
-#if wxOSX_USE_COCOA
+#if wxUSE_MARKUP && wxOSX_USE_COCOA
     virtual void        SetLabelMarkup( const wxString& WXUNUSED(markup) ) { }
 #endif
 

src/osx/cocoa/button.mm

@@ -130,6 +130,7 @@ public:
         wxWidgetCocoaImpl::SetBitmap(bitmap);
     }
 
+#if wxUSE_MARKUP
     virtual void SetLabelMarkup(const wxString& markup)
     {
         wxMarkupToAttrString toAttr(GetWXPeer(), markup);
@@ -146,6 +147,7 @@ public:
 
         [GetNSButton() setAttributedTitle:attrString];
     }
+#endif // wxUSE_MARKUP
 
     void SetPressedBitmap( const wxBitmap& bitmap )
     {