Initialize linked list for recurrent items

When switching to the generic linked list implementation for recurring
events in 9fab248 (Use generic lists for recurring apointments and
events., 2011-04-16), no initialization routine for the list of
recurring events was added. Fix this and properly initialize the list on
startup.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

src/recur.c

@@ -140,6 +140,11 @@ void recur_apoint_llist_init(void)
 	LLIST_TS_INIT(&recur_alist_p);
 }
 
+void recur_event_llist_init(void)
+{
+	LLIST_INIT(&recur_elist);
+}
+
 void recur_apoint_free(struct recur_apoint *rapt)
 {
 	mem_free(rapt->mesg);