because I
(a) forgot to insert parentheses which changes the meaning of some expressions and
(b) I now use the AdjustFoo calls when changing unary operations, which reads much better

This reverts commit 2096aac8.

Change-Id: I4b5941c4119b95aaefb9180a0ca95a1dbb4ec317
Reviewed-on: https://gerrit.libreoffice.org/49844Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>