[BUGFIX] Apply hsc() to exception debug output

Resolves: #72755
Releases: master, 7.6, 6.2
Change-Id: If62a72ccc0f8daa47b5cd67b1e2f3fb30f2bf1dc
Reviewed-on: https://review.typo3.org/45980


Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Martin Kutschker <martin.kutschker@ymail.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>