main: Voidify php_startup_ticks() (php#17479)

As it always returns SUCCESS and we ignored the return value anyway

Author: Girgias

main/php_ticks.c

@@ -23,10 +23,9 @@ struct st_tick_function
 	void *arg;
 };
 
-int php_startup_ticks(void)
+void php_startup_ticks(void)
 {
 	zend_llist_init(&PG(tick_functions), sizeof(struct st_tick_function), NULL, 1);
-	return SUCCESS;
 }
 
 void php_deactivate_ticks(void)

main/php_ticks.h

@@ -17,7 +17,7 @@
 #ifndef PHP_TICKS_H
 #define PHP_TICKS_H
 
-int php_startup_ticks(void);
+void php_startup_ticks(void);
 void php_deactivate_ticks(void);
 void php_shutdown_ticks(php_core_globals *core_globals);
 void php_run_ticks(int count);