Make regress for conf

I was looking at the http://trac.opendnssec.org/ticket/124 and it was fixed in http://trac.opendnssec.org/ticket/171.

But when testing it (by adding some random text in zonelist.xml), I get this:

conf.xml validates
kasp.xml validates
zonelist.xml:5: element ZoneList: Relax-NG validity error : Did not expect text in element ZoneList content
zonelist.xml fails to validate
/bin/bash: line 2: exit: conf.rng: numeric argument required
make: *** [regress] Error 255

The exit does not get the exit code from the previous executed command, but it receives the list of .rng files.