Merge branch 'PHP-8.1'

* PHP-8.1:
  Fix GH-8923: error_log on Windows can hold the file write lock

Author: cmb69

main/main.c

@@ -832,9 +832,10 @@ PHPAPI ZEND_COLD void php_log_err_with_severity(const char *log_message, int sys
 #endif
 			len = spprintf(&tmp, 0, "[%s] %s%s", ZSTR_VAL(error_time_str), log_message, PHP_EOL);
 #ifdef PHP_WIN32
-			php_flock(fd, 2);
+			php_flock(fd, LOCK_EX);
 			/* XXX should eventually write in a loop if len > UINT_MAX */
 			php_ignore_value(write(fd, tmp, (unsigned)len));
+			php_flock(fd, LOCK_UN);
 #else
 			php_ignore_value(write(fd, tmp, len));
 #endif