Addresses encoded in 32 bytes instead of 20 bytes

[aklenik]

In the encodeSingle function, addresses are translated to unit160, so far so good.

Then the recursive call hits the uint-like check and the supplied size (i.e., 160) is retrieved. However, BN's toArrayLike function is called with a fix 32 bytes length. Which is fine, since the EVM operates with this word length, except for the addresses.

@axic Can you confirm whether this is the intended behavior? AFAIK, addresses should be 20 bytes, in which case encodeSingle must retain the information during the recursive call that it's encoding an address (or generally, whether it should respect the parsed size). I don't know how this behavior manifests with more exotic function signatures.