* Bugfix #8426: certain hooks options segfaulted

This was caused by my previous commit for add_hook.

* Also, removed a compiler warning in the Python code

source/blender/python/api2_2x/Scene.c

@@ -42,6 +42,7 @@ struct View3D;
 #include "DNA_screen_types.h"
 #include "DNA_userdef_types.h" /* U.userdefs */
 #include "DNA_object_types.h" /* SceneObSeq_new */
+#include "BKE_armature.h"
 #include "BKE_depsgraph.h"
 #include "BKE_library.h"
 #include "BKE_object.h"