This reverts commit 128e7ce3 (plus
40b44f7e "Remove line again that was committed
in error" follow-up), now that the cause is found and addressed with
592f4f6a "external/firebird: Backport fix for
CORE-5452 causing spurious SEGV".

Change-Id: I84ddc90707693c2577ad0cd913e987bc9e173e34
Reviewed-on: https://gerrit.libreoffice.org/33229Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>