Use correct types on CVE-2014-4113

I busted it :( 

Thanks again Myst3rie and @OJ!

For verification purposes, proceed like in #4108
Yeah that's what we should do. Both `DWORD` and `DWORD64` result in the exact same types as what is defined behind `DWORD_PTR`. So this new typedef isn't required.

@jvazquez-r7 can you please remove the typedef and instead of `MYWORD` and `PMYWORD` use the values `DWORD_PTR` and `PDWORD_PTR`? Please :)

I will and as soon as that's done. Thanks!