twn_util.c: add file_read()

src/twn_loop.c

@@ -754,6 +754,11 @@ static bool try_mounting_root_pack(char *path) {
 }
 
 
+static void garbage_collect(void) {
+    file_read_garbage_collect();
+}
+
+
 int enter_loop(int argc, char **argv) {
     profile_start("startup");
 
@@ -866,6 +871,7 @@ int enter_loop(int argc, char **argv) {
         /* dispatch all filewatch driven events, such as game object and asset pack reload */
         filewatch_poll();
         main_loop();
+        garbage_collect();
     }
 
     if (ctx.game.debug)