Adds funny casting to avoid pedantic ISO C warning

src/event.c

@@ -25,7 +25,8 @@ static LinkedList *callbacks = NULL;
 	void
 event_register_listener(EventCallback cb)
 {
-    linkedlist_append(&callbacks, cb);
+	// Cast a pointer to a pointer to avoid -wpedantic iso warning
+	linkedlist_append(&callbacks, *(void**)(&cb));
 }
 
 	void
@@ -40,7 +41,8 @@ event_trigger(Event *event)
 {
 	LinkedList *cbs = callbacks;
 	while (cbs) {
-        ((EventCallback) cbs->data)(event);
+		// Reverse the cast from the register (-pedantic ISO warning)
+		(*(EventCallback*)(&cbs->data))(event);
 		cbs = cbs->next;
 	}
 }