set dirty flag correctly when object/message box text changes

pd/src/g_editor.c

@@ -7694,7 +7694,8 @@ static void canvas_createobj(t_canvas *x, t_symbol *s, int argc, t_atom *argv)
 //            rtext_settext(rtext, buf, length);
 //            binbuf_free(b);
             // Set the dirty flag since we've changed the rtext content...
-            x->gl_editor->e_textdirty = 1;
+            canvas_dirty(x, 1);
+            //x->gl_editor->e_textdirty = 1;
             if (s == gensym("createobj"))
                 glist_deselect(x, y); // instantiate
             break;