gnucash-htdocs master: Prevent null references in translations cache.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-htdocs/commit/7afd5fdd (commit)
	from  https://github.com/Gnucash/gnucash-htdocs/commit/23f21d1f (commit)



commit 7afd5fdd499830f8f2775c7ba481c48aef20ccc7
Author: John Ralls <jralls at ceridwen.us>
Date:   Fri Mar 31 19:45:46 2023 -0700

    Prevent null references in translations cache.



Summary of changes:
 externals/gettext.php | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)