xapissl fails to start on Debian Jessie

[antonym]

# ./usr/lib/xapi/xapissl start
Starting xapi SSL: [ ] Clients allowed=500
[.] stunnel 5.01 on x86_64-pc-linux-gnu platform
[.] Compiled with OpenSSL 1.0.1g 7 Apr 2014
[.] Running  with OpenSSL 1.0.1h-dev xx XXX xxxx
[.] Update OpenSSL shared libraries or rebuild stunnel
[.] Threading:PTHREAD Sockets:POLL,IPv6 SSL:ENGINE,OCSP,FIPS Auth:LIBWRAP
[ ] errno: (*__errno_location ())
[.] Reading configuration from file /etc/xapi/xapissl.conf
[!] Line 7: "compression = zlib": zlib compression is disabled in the Debian package of     OpenSSL

Removing compression = zlib allows it to start correctly.