Error in Client - Three Legged Auth dies when there is no refresh token.

[cdarrigo]

WHen the refresh token is null (which is true when implementing a client using threelegged client mode), the following exception is thrown
ArgumentNullException

from here

public string Code
{
get
{
return base.Parameters["code"];
}
set
{
if (string.IsNullOrEmpty(value))
{
throw new ArgumentNullException("value");
}
base.Parameters["code"] = value;
}
}

[maartenba]

Fixed