stacie_hashed_token_derive() work. - Removed unncessary else constructs. - Added single exit labels, cleaned up param sanitization
stacie_hashed_token_derive() work.
- Removed unncessary else constructs.
- Added single exit labels, cleaned up param sanitization

lavabit/magma,lavabit/magma,lavabit/magma,lavabit/magma,lavabit/magma,lavabit/magma,lavabit/magma,lavabit/magma