added wxUSE_PALETTE and fixed compilation with it set to 0

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11749 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/image.cpp

@@ -58,7 +58,9 @@ public:
     unsigned char   m_maskRed,m_maskGreen,m_maskBlue;
     bool            m_ok;
     bool            m_static;
+#if wxUSE_PALETTE
     wxPalette       m_palette;
+#endif // wxUSE_PALETTE
     wxArrayString   m_optionNames;
     wxArrayString   m_optionValues;
 };
@@ -718,6 +720,8 @@ int wxImage::GetHeight() const
     return M_IMGDATA->m_height;
 }
 
+#if wxUSE_PALETTE
+
 // Palette functions
 
 bool wxImage::HasPalette() const
@@ -742,6 +746,8 @@ void wxImage::SetPalette(const wxPalette& palette)
     M_IMGDATA->m_palette = palette;
 }
 
+#endif // wxUSE_PALETTE
+
 // Option functions (arbitrary name/value mapping)
 void wxImage::SetOption(const wxString& name, const wxString& value)
 {