ICAP responses not setting "Encapsulated" header correctly

[uatuko]

E.g. res-hdr=0 is missing from the response below.

ICAP/1.0 200 OK
Connection: close
Date: Thu Dec 27 12:49:02 2018 GMT
ISTag: BITZ-1545914942-75880
Server: bitz-server 2.0.2
Encapsulated: res-body=159

HTTP/1.1 200 OK
Date: Mon, 10 Jan 2000 09:52:22 GMT
Server: Apache/1.3.6 (Unix)
ETag: "63840-1ab7-378d415b"
Content-Type: text/html
Content-Length: 51

33
This is data that was returned by an origin server.
0