fix bug in XFillBitmapItem::PutValue

Change-Id: I798d0ea0fc0a0f24275f58932ea0c91077212d85
Reviewed-on: https://gerrit.libreoffice.org/71678
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

svx/source/xoutdev/xattrbmp.cxx

@@ -301,7 +301,7 @@ bool XFillBitmapItem::PutValue( const css::uno::Any& rVal, sal_uInt8 nMemberId )
         }
     }
 
-    return (bSetName || bSetBitmap);
+    return (bSetURL || bSetName || bSetBitmap);
 }
 
 bool XFillBitmapItem::CompareValueFunc( const NameOrIndex* p1, const NameOrIndex* p2 )