Read this MSO_Anchor value as a sal_uInt32 too

...for consistency with 0fad62c2
"-fsanitize=enum"

Change-Id: I96e2a791811b5f45735d2ccb0686bcc12fe9a5a2

filter/source/msfilter/msdffimp.cxx

@@ -1428,7 +1428,7 @@ void DffPropertyReader::ApplyCustomShapeTextAttributes( SfxItemSet& rSet ) const
         eTHA = SDRTEXTHORZADJUST_CENTER;
 
         // read text anchor
-        MSO_Anchor eTextAnchor = (MSO_Anchor)GetPropertyValue( DFF_Prop_anchorText, mso_anchorTop );
+        sal_uInt32 eTextAnchor = GetPropertyValue( DFF_Prop_anchorText, mso_anchorTop );
 
         switch( eTextAnchor )
         {