Bas64 with padding decoding fails when there is a new line character before the next tag

[fdgStilla]

I'm using anyrpc as a c++ RPC server and xmlrcp as a python client.

xmlrpc send a pretty xml with a newline character before/after each tag.
But if the base64 string is padded (ends with = or ==) anyrpc always expects the next tag to be just after the end of the base64 string.
See Base64Decode method:

// verify termination character
return (is.Peek() == termChar);