Some warning during make

[ambrosa]

Hi.
Ubuntu 22.04 LTS and PHP 8.1
Download your code (zip) and then:

phpize --clean
phpize
./configure
make

During make I see some warning but stats.so is compiled fine and make test reports NO errors :-)
BTW these are the warnings:

libtool: compile: cc -I. -I/root/php-stat-2.1.0/pecl-math-stats-master -I/root/php-stat-2.1.0/pecl-math-stats-master/include -I/root/php-stat-2.1.0/pecl-math-stats-master/main -I/root/php-stat-2.1.0/pecl-math-stats-master -I/usr/include/php/20210902 -I/usr/include/php/20210902/main -I/usr/include/php/20210902/TSRM -I/usr/include/php/20210902/Zend -I/usr/include/php/20210902/ext -I/usr/include/php/20210902/ext/date/lib -DHAVE_CONFIG_H -g -O2 -DZEND_COMPILE_DL_EXT=1 -c /root/php-stat-2.1.0/pecl-math-stats-master/php_stats.c -MMD -MF php_stats.dep -MT php_stats.lo -fPIC -DPIC -o .libs/php_stats.o

In file included from /usr/include/php/20210902/Zend/zend.h:33,
from /usr/include/php/20210902/main/php.h:32,
from /root/php-stat-2.1.0/pecl-math-stats-master/php_stats.c:23:

/root/php-stat-2.1.0/pecl-math-stats-master/php_stats.c: In function ‘zif_stats_stat_percentile’:
/root/php-stat-2.1.0/pecl-math-stats-master/php_stats.c:3212:42: warning: passing argument 3 of ‘zend_hash_sort_ex’ from incompatible pointer type [-Wincompatible-pointer-types]
3212 | zend_hash_sort(Z_ARRVAL_P(arg1), stats_array_data_compare, 1);
| ^~~~~~~~~~~~~~~~~~~~~~~~
| |
| int (*)(const void *, const void *)

/usr/include/php/20210902/Zend/zend_hash.h:290:42: note: in definition of macro ‘zend_hash_sort’
290 | zend_hash_sort_ex(ht, zend_sort, compare_func, renumber)
| ^~~~~~~~~~~~

/usr/include/php/20210902/Zend/zend_hash.h:286:108: note: expected ‘bucket_compare_func_t’ {aka ‘int (*)(struct _Bucket *, struct _Bucket )’} but argument is of type ‘int ()(const void , const void )’
286 | ZEND_API void ZEND_FASTCALL zend_hash_sort_ex(HashTable *ht, sort_func_t sort_func, bucket_compare_func_t compare_func, bool renumber);
| ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~