PHP 8.0.0RC5 + mysqli error: Uncaught TypeError: mysqli_num_rows()

[petecooper]

Expected behaviour

Error-free front side.

Actual behaviour

Error: Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /var/www/sites/textpattern.co/php-next-dev-demo/live/4.8.4/textpattern/lib/txplib_db.php:869 Stack trace: #0 /var/www/sites/textpattern.co/php-next-dev-demo/live/4.8.4/textpattern/lib/txplib_db.php(869): mysqli_num_rows() #1 /var/www/sites/textpattern.co/php-next-dev-demo/live/4.8.4/textpattern/lib/txplib_misc.php(3333): safe_field() #2 /var/www/sites/textpattern.co/php-next-dev-demo/live/4.8.4/textpattern/lib/txplib_misc.php(3363): fetch_page() #3 /var/www/sites/textpattern.co/php-next-dev-demo/live/4.8.4/textpattern/publish.php(740): parse_page() #4 /var/www/sites/textpattern.co/php-next-dev-demo/live/4.8.4/index.php(74): textpattern() #5 {main} thrown in /var/www/sites/textpattern.co/php-next-dev-demo/live/4.8.4/textpattern/lib/txplib_db.php on line 869

Steps to reproduce

• install 4.8.4 branch via auto-installer
• note error

Additional information

Textpattern version: 4.8.4 branch

Web server vendor and version: Nginx 1.19.4

Database server vendor and version: Percona 8.0

PHP version: PHP 8.0.0 RC5

Error found at https://php-next-dev-demo.textpattern.co/4.8.4/

[petecooper]

Fixed with 02163ed