sw: dump SwCellFrame rowspan in layout.xml

Change-Id: I4477874116e8059cf0a82b9b3106c9e26a641947
Reviewed-on: https://gerrit.libreoffice.org/68400
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>

sw/source/core/text/xmldump.cxx

@@ -14,6 +14,7 @@
 #include <tabfrm.hxx>
 #include <pagefrm.hxx>
 #include <txtfrm.hxx>
+#include <cellfrm.hxx>
 #include <hffrm.hxx>
 #include <rootfrm.hxx>
 #include <editsh.hxx>
@@ -360,6 +361,12 @@ void SwFrame::dumpAsXml( xmlTextWriterPtr writer ) const
             }
         }
 
+        if (IsCellFrame())
+        {
+            SwCellFrame const* pCellFrame(static_cast<SwCellFrame const*>(this));
+            xmlTextWriterWriteFormatAttribute( writer, BAD_CAST( "rowspan" ), "%ld", pCellFrame->GetLayoutRowSpan() );
+        }
+
         xmlTextWriterStartElement( writer, BAD_CAST( "infos" ) );
         dumpInfosAsXml( writer );
         xmlTextWriterEndElement( writer );