Don't memset the structures as it invaludates the string pointers.

git-svn-id: https://svn.code.sf.net/p/desmume/code/trunk@4795 5577840e-afb3-4e59-9ef3-2b7f898b1952
add something, at least, in place of the deleted memset code

git-svn-id: https://svn.code.sf.net/p/desmume/code/trunk@4796 5577840e-afb3-4e59-9ef3-2b7f898b1952