SfxDocumentMetaData: suppress some spurious warnings
SfxDocumentMetaData: suppress some spurious warnings

These always trigger on a new document.

Change-Id: Ied60f52c4dc348b2b18f6dc8c30204ee3dc56f29

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core