by using for-range loops and std::find_if

Change-Id: I57f26828ed66cbdfc41857d9105b6694a02a4cf8
Reviewed-on: https://gerrit.libreoffice.org/47198Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>