trynna fix click handler being garbage collected

include/app/app.h

@@ -27,8 +27,8 @@ struct Element {
   virtual Vec2<float> size(Window *window) = 0;
 
   void click() {
-    if (!mrb_nil_p(on_click.proc))
-      on_click.call();
+    printf("Running click handler\n");
+    on_click.call();
   }
 };
 
@@ -170,6 +170,7 @@ struct Scene {
   void update_scene(uint64_t delta_time) {
     if (!mrb_nil_p(update.proc)) {
       mrb_value dt_val = mrb_int_value(Ruby::mrb, delta_time);
+      printf("running: update, dt: %lu\n", delta_time);
       update.call(1, &dt_val);
     }
   }

include/binding/ruby.h

@@ -60,11 +60,8 @@ struct Block {
   Block() : proc(mrb_nil_value()) {}
 
   void set_proc(mrb_value new_proc) {
-    if (!mrb_nil_p(proc))
-      mrb_gc_unregister(mrb, proc);
     proc = new_proc;
-    if (!mrb_nil_p(proc))
-      mrb_gc_protect(mrb, proc);
+    mrb_gc_protect(mrb, proc);
   }
 
   Block(const Block &) = delete;
@@ -76,16 +73,10 @@ struct Block {
     mrb_value result = mrb_funcall_argv(mrb, proc, mrb_intern_cstr(mrb, "call"), argc, argv);
     return result;
   }
-
-  ~Block() {
-    mrb_gc_unregister(mrb, proc);
-  }
 };
 
 inline void run_string(const char *code, size_t length) {
-  int ai = mrb_gc_arena_save(mrb);
   mrb_load_nstring(mrb, code, length);
-  mrb_gc_arena_restore(mrb, ai);
 }
 }; // namespace Ruby