Replace complex uses of ::std::for_each with a range-based for-loop.

Change-Id: I6f3d8488a63a5bed271ab70ad6f024e9869906cc
Reviewed-on: https://gerrit.libreoffice.org/19143Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Jan Holesovsky <kendy@collabora.com>
Tested-by: Jan Holesovsky <kendy@collabora.com>