sapi/fpm: little simplification for the kqueue backend. (#13423)

Author: devnexen

sapi/fpm/fpm/events/kqueue.c

@@ -79,14 +79,12 @@ static int fpm_event_kqueue_init(int max) /* {{{ */
 		return -1;
 	}
 
-	kevents = malloc(sizeof(struct kevent) * max);
+	kevents = calloc(max, sizeof(struct kevent));
 	if (!kevents) {
 		zlog(ZLOG_ERROR, "epoll: unable to allocate %d events", max);
 		return -1;
 	}
 
-	memset(kevents, 0, sizeof(struct kevent) * max);
-
 	nkevents = max;
 
 	return 0;