indent try-block, remove obsolete comment

indent block one level deeper than block in
which it is contained

Change-Id: Ibefd1a87c25100001f842f42f053d9e68feba8a6
Reviewed-on: https://gerrit.libreoffice.org/13498
Reviewed-by: Noel Grandin <noelgrandin@gmail.com>
Tested-by: Noel Grandin <noelgrandin@gmail.com>