1.13c asn bug

[rourou6673]

In version 1.13c, when an Assassin is equipped with dual claws and possesses the Weapon Block skill, clicking the defense tab in the character panel will cause an error.

[rourou6673]

@ dschu012 Please have a look at this problem when you are free.

[swine-flu]

This has to be the same issue as #43, you are using some kind of wrapper like d2dx/d2gl, aren't you?