f_pc_layer (#16)

* f_op_actor_tag OK

* f_pc_layer_tag OK

* f_pc_layer_iter

* forgot a return

* identation and extern var name comments

* fix struct member name

Co-authored-by: Pheenoh <pheenoh@gmail.com>

include/SComponent/c_tag.h

@@ -7,7 +7,8 @@
 #include "SComponent/c_list.h"
 #include "SComponent/c_tree.h"
 
-struct create_tag_class : public node_class {
+struct create_tag_class {
+    node_class pNode;
     void *mpTagData;
     s8 mbIsUse;
 };