Fix in the encoder.js

[sashee]

Hi,

we needed an amendment to the encoder.js to make it work in our codebase. You can find it at: sashee@35cb7a6 .

We are unsure whether it is a bug in the library or in the remote server we are using. Feel free to use it and/or incorporate it in your codebase if you see fit. Please close this issue if this change is deemed unnecessary.

Note: I am not the author of the patch, so I can provide little help what exactly it does. I ran the tests and it did not break any.

[mcollina]

Would you like to send a PR adding a test for it?

I'm not sure why that is needed in the first place.