Jan Nidzwetzki b8e674c137 Fixed handling of NULL values in bookend_sfunc
In the function bookend_sfunc values are compared. If the first
processed value is a NULL value, it was copied into the state of the
sfunc. A following comparison between the NULL value of the state and a
non-NULL value could lead to a crash.

This patch improves the handling of NULL values in bookend_sfunc.
2023-06-07 12:38:40 +02:00
..
2019-06-12 17:01:55 -04:00
2020-05-28 18:35:09 +02:00
2023-05-27 10:29:11 +05:30