* Use range based for loops where it was possible in drawinglayer
+ Goal: Better readability of the code
Change-Id: I188d27ce09c0d603e39d40ea63e91a8666e5d885
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/123758
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>