Header columns can disappear with filtered data in pivot tables

When we set on a pivot table a filter that filters all the rows,
the pivot table showed only the first header columns and computed
column, but all the columns headers should still be shown so we can
adjust the filter for the column. This fixes this issue.

Also add more debug output and prevent a crash when running pivot
table tests.

Change-Id: I30b4ee72cf8436c4522ab4ba0781462b214816dd
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/151871
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

0 files changed, 0 insertions, 0 deletions