Decoding Invalid Strings sometimes raise MatchError instead of Protobuf.DecodeError

[D-Town44]

Hello!

I found that in newer versions of the lib sometimes when you decode an invalid string, a MatchError is raised instead of a Protobuf.DecodeError.

Example:

Specifically, I was testing when I tried to decode JSON strings. Seems like some strings still raise the appropriate Protobuf.DecodeError.

Good Example:

I think it is related to the added functionality surrounding __unknown_fields__.

Let me know if you have any questions or if there is anything I can do to help!