Fix #1 PHP 8.0 build

[remicollet]

See #1

Also fix the build warning about ZEND_API

[remicollet]

=====================================================================
PHP         : /opt/remi/php80/root/usr/bin/php 
PHP_SAPI    : cli
PHP_VERSION : 8.0.30
ZEND_VERSION: 4.0.30
PHP_OS      : Linux - Linux builder.remirepo.net 6.12.8-200.fc41.x86_64 #1 SMP PREEMPT_DYNAMIC Thu Jan  2 19:26:03 UTC 2025 x86_64
INI actual  : /work/GIT/pecl-and-ext/aspect/tmp-php.ini
More .INIs  :   
CWD         : /work/GIT/pecl-and-ext/aspect
Extra dirs  : 
VALGRIND    : Not used
=====================================================================
TIME START 2025-01-14 12:30:42
=====================================================================
PASS Check if aspect is loaded [tests/memoize_001.phpt] 
PASS Memoize attribute exists [tests/memoize_002.phpt] 
PASS Memoize function calls [tests/memoize_003.phpt] 
PASS Functions aren't memoized if they throw an exception [tests/memoize_004.phpt] 
PASS Functions are memoized with different parameters [tests/memoize_005.phpt] 
PASS Class methods can be memoized [tests/memoize_006.phpt] 
PASS Static class methods can be memoized [tests/memoize_007.phpt] 
PASS Handle different argument types [tests/memoize_008.phpt] 
PASS It returns the same object [tests/memoize_009.phpt] 
PASS It doesn't memoize if the function returns void [tests/memoize_010.phpt] 
=====================================================================
TIME END 2025-01-14 12:30:42

=====================================================================
TEST RESULT SUMMARY
---------------------------------------------------------------------
Exts skipped    :    0
Exts tested     :   16
---------------------------------------------------------------------

Number of tests :   10                10
Tests skipped   :    0 (  0.0%) --------
Tests warned    :    0 (  0.0%) (  0.0%)
Tests failed    :    0 (  0.0%) (  0.0%)
Tests passed    :   10 (100.0%) (100.0%)
---------------------------------------------------------------------
Time taken      :    0 seconds
=====================================================================

[pierredup]

Thank you @remicollet