Enable -Weverything, fix a ton of bugs.

adsbus/wakeup.h

@@ -4,9 +4,9 @@
 
 struct peer;
 
-void wakeup_init();
-void wakeup_cleanup();
-int wakeup_get_delay();
-void wakeup_dispatch();
+void wakeup_init(void);
+void wakeup_cleanup(void);
+int wakeup_get_delay(void);
+void wakeup_dispatch(void);
 void wakeup_add(struct peer *, uint32_t);
 uint32_t wakeup_get_retry_delay_ms(uint32_t);