fdo#58819 VML export: handle objects anchored in the header / footer

Previously such shapes landed in the middle of section properties.

Change-Id: I7993eaa721e2b53d8adb1cbdee40992bbeb11416

include/oox/export/vmlexport.hxx

@@ -75,6 +75,8 @@ public:
     ::sax_fastparser::FSHelperPtr
                         GetFS() { return m_pSerializer; }
 
+    void SetFS(::sax_fastparser::FSHelperPtr pSerializer);
+
     /// Export the sdr object as VML.
     ///
     /// Call this when you need to export the object as VML.

oox/source/export/vmlexport.cxx

@@ -49,6 +49,11 @@ VMLExport::VMLExport( ::sax_fastparser::FSHelperPtr pSerializer, VMLTextExport*
     memset( m_pShapeTypeWritten, 0, ESCHER_ShpInst_COUNT * sizeof( bool ) );
 }
 
+void VMLExport::SetFS( ::sax_fastparser::FSHelperPtr pSerializer )
+{
+    m_pSerializer = pSerializer;
+}
+
 VMLExport::~VMLExport()
 {
     delete mpOutStrm, mpOutStrm = NULL;

sw/source/filter/ww8/docxexport.cxx

@@ -599,12 +599,14 @@ void DocxExport::WriteHeaderFooter( const SwFmt& rFmt, bool bHeader, const char*
 
     // switch the serializer to redirect the output to word/styles.xml
     m_pAttrOutput->SetSerializer( pFS );
+    m_pVMLExport->SetFS( pFS );
 
     // do the work
     WriteHeaderFooterText( rFmt, bHeader );
 
     // switch the serializer back
     m_pAttrOutput->SetSerializer( m_pDocumentFS );
+    m_pVMLExport->SetFS( m_pDocumentFS );
 
     // close the tag
     sal_Int32 nReference;