- if the UNO_QUERY_THROW cast throws, this skips all of the disposing
  (and thus leaks)
- the whole try-catch-ignore case has been there since early c6b95527
- even in that commit message, no sane justification has been given
- apparently the try-block was Java-style "catch exceptions until it
  runs" cargo-cult
- this change is still the more conservative change: probably the whole
  try-catch framing should be removed

Change-Id: Ie3a71e48eb056afd8a844e19898dc1555de4297e
Reviewed-on: https://gerrit.libreoffice.org/35690Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Björn Michaelsen <bjoern.michaelsen@canonical.com>