[php-src] Issue #8841: php-cli core dump calling a badly formed function

Issue: https://github.com/php/php-src/issues/8841 Author: gjcarrette ### Description The following interaction gives a SEGV ``` $ rpm -q php-cli php-cli-8.1.4-1.el8.remi.x86_64 $ php -n -dauto_prepend_file= -a Interactive shell php > echo phpversion(); 8.1.4 php > function f ($x): void { return $x;} Fatal error: A void function must not return a value in php shell code on line 1 php > f(10); Segmentation fault (core dumped) ``` Resulted in this output: ``` Segmentation fault (core dumped) ``` But I expected this output instead: ``` Warning: Uncaught Error: Call to undefined function f() in php shell code:1 ``` Well anything but a core dump. This happens in PHP 7.4 too so it is not a PHP 8.1 regression. ### PHP Version PHP 8.1.4 ### Operating System CentOS Linux release 7.5.1804 (Core)