Fix JavaScript CLI test runner.
Fix JavaScript CLI test runner.

Accidentally inverted the logic of a test when patching for newer
versions of SpiderMonkey.

linearregression/bigcouch,linearregression/bigcouch,cloudant/bigcouch,PerilousApricot/bigcouch,kofron/bigcouch,Asquera/bigcouch,andrejb/cloudant_bigcouch,georgemarshall/bigcouch,linearregression/bigcouch,andrejb/cloudant_bigcouch,andrejb/cloudant_bigcouch,kofron/bigcouch,Asquera/bigcouch,cloudant/bigcouch,linearregression/bigcouch,breezjw/bigcouch,PerilousApricot/bigcouch,kofron/bigcouch,georgemarshall/bigcouch,kofron/bigcouch,Asquera/bigcouch,Asquera/bigcouch,kofron/bigcouch,PerilousApricot/bigcouch,andrejb/cloudant_bigcouch,linearregression/bigcouch,breezjw/bigcouch,cloudant/bigcouch,cloudant/bigcouch,breezjw/bigcouch,cloudant/bigcouch,PerilousApricot/bigcouch,PerilousApricot/bigcouch,breezjw/bigcouch,linearregression/bigcouch,georgemarshall/bigcouch,andrejb/cloudant_bigcouch,georgemarshall/bigcouch,linearregression/bigcouch,Asquera/bigcouch,Asquera/bigcouch,breezjw/bigcouch,georgemarshall/bigcouch,cloudant/bigcouch,breezjw/bigcouch,cloudant/bigcouch,georgemarshall/bigcouch,andrejb/cloudant_bigcouch,kofron/bigcouch,PerilousApricot/bigcouch,andrejb/cloudant_bigcouch