Fix for NPE on equipping natural weapon

git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@22159 ef53c05b-3124-4d59-ae7d-fe3273f42be7
Please implement tag to describe additional damage for natural attacks
Issue#: NEWTAG-383


git-svn-id: svn+ssh://svn.code.sf.net/p/pcgen/code/Trunk@22160 ef53c05b-3124-4d59-ae7d-fe3273f42be7