gnucash stable: Multiple changes pushed

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/fb0814ce (commit)
	 via  https://github.com/Gnucash/gnucash/commit/6ba5bb32 (commit)
	from  https://github.com/Gnucash/gnucash/commit/17e08d0f (commit)



commit fb0814ced5eeb1618e0cb390908e815cff8c3658
Merge: 17e08d0f43 6ba5bb326a
Author: John Ralls <jralls at ceridwen.us>
Date:   Fri Mar 31 11:30:09 2023 -0700

    Merge Richard Cohen's 'fix-clang1507-build' into stable.

commit 6ba5bb326aed025e166ce782c59ea955b9d7161f
Author: Richard Cohen <richard at daijobu.co.uk>
Date:   Tue Mar 28 13:53:57 2023 +0100

    Fix dereference of expired temporaries.
    
    Reported by clang 15.0.7, which will be in Ubuntu 23.04, -Wdangling-gsl



Summary of changes:
 libgnucash/backend/xml/test/test-file-stuff.cpp | 9 +++------
 libgnucash/core-utils/gnc-filepath-utils.cpp    | 5 ++++-
 libgnucash/engine/gnc-date.cpp                  | 3 ++-
 libgnucash/engine/gnc-features.cpp              | 9 ++++++---
 libgnucash/engine/gnc-optiondb.cpp              | 5 ++++-
 libgnucash/engine/qofinstance.cpp               | 4 ++--
 6 files changed, 21 insertions(+), 14 deletions(-)