In current _shared, LED_FLASHER cannot be compiled if BUZZER is undefined. This patch fixes this issue:
https://github.com/wertarbyte/multiwii- ... a6439f9737
[PATCH] Make LED_FLASHER compilable without BUZZER
Re: [PATCH] Make LED_FLASHER compilable without BUZZER
This bug was introduced during moving buzzer code from Buzzer.ino to Alarms.ino. With oryginal Buzzer.ino does not exist.