Call correct function on plugin shutdown

src/lsi/main.c

@@ -16,7 +16,7 @@ void finish(void)
 
 	for (i = nplugins-1; i >= 0; i--) {
 		printf("Shutting down plugin '%s'\n", PT(i).pl_name);
-		(PT(i).pl_init)();
+		(PT(i).pl_shutdown)();
 		printf("Plugin '%s' shut down\n", PT(i).pl_name);
 		PT(i).pl_active = 0;
 	}