Add initialization to missing member of callback_t (tinyobjloader#361)

SeanCurtis-TRI · web-flow · commit ed48fa93268e · 2023-02-14T18:09:41.000+09:00
diff --git a/tiny_obj_loader.h b/tiny_obj_loader.h
@@ -446,6 +446,7 @@ struct callback_t {
 
   callback_t()
       : vertex_cb(NULL),
+        vertex_color_cb(NULL),
         normal_cb(NULL),
         texcoord_cb(NULL),
         index_cb(NULL),
