small tweak to clean() to show failure deatils
small tweak to clean() to show failure deatils

In json output, there was no detail shown for the failures.  Adding line #69 results in failed tests showing the 'err' object.
ajaykodali/mocha,GerHobbelt/mocha,netei/mocha,charlie77/mocha,mponizil/mocha,tinganho/mocha,charlie77/mocha,GabrielNicolasAvellaneda/mocha,jjoos/mocha,Phoenixmatrix/mocha,imsobear/mocha,geometrybase/mocha,moander/mocha,verkkokauppacom/mocha,jkresner/mocha,nightwatchjs/mocha-nightwatch,cleberar38/mocha,phated/mocha,pandeysoni/mocha,mysterycommand/mocha,tinganho/mocha,GranitB/mocha,beatfactor/mocha,TimothyGu/mocha,jjoos/mocha,hoverduck/mocha,santiagoaguiar/mocha,Hacker0x01/mocha,tswaters/mocha,ELLIOTTCABLE/mocha,villesau/mocha,outsideris/mocha,boneskull/mocha,villesau/mocha,diydyq/mocha,a8m/mocha,jasonkarns/mocha,outsideris/mocha,youprofit/mocha,node-rookie/mocha,pandeysoni/mocha,joshski/mocha,beatfactor/mocha,benvinegar/mocha,benvinegar/mocha,Phoenixmatrix/mocha,netei/mocha,mochajs/mocha,joshski/mocha,jbnicolai/mocha,woodyrew/mocha,a8m/mocha,gaye/mocha,jbnicolai/mocha,DeNA/mocha,mbovel/mocha,kevinburke/mocha,hashcube/mocha,woodyrew/mocha,imsobear/mocha,youprofit/mocha,JohnnyEstilles/mocha,GabrielNicolasAvellaneda/mocha,Phoenixmatrix/mocha,rlugojr/mocha,mochajs/mocha,tinganho/mocha,GranitB/mocha,Khan/mocha,imsobear/mocha,luxe-eng/valet-express.mocha,joshski/mocha,sul4bh/mocha,adamgruber/mocha,hoverduck/mocha,wltsmrz/mocha,mponizil/mocha,sul4bh/mocha,pumpupapp/mocha,duncanbeevers/mocha,nexdrew/mocha,JohnnyEstilles/mocha,rlugojr/mocha,antoval/mocha,charlie77/mocha,menelaos/mocha-solarized,ryanshawty/mocha,tswaters/mocha,beni55/mocha,a8m/mocha,nightwatchjs/mocha-nightwatch,Khan/mocha,apkiernan/mocha,kyroskoh/mocha,mysterycommand/mocha,KevinTCoughlin/mocha,pandeysoni/mocha,beni55/mocha,menelaos/mocha-solarized,geometrybase/mocha,igwejk/mocha,ianwremmel/mocha,kyroskoh/mocha,cleberar38/mocha,jjoos/mocha,mbovel/mocha,wltsmrz/mocha,apkiernan/mocha,beatfactor/mocha,luxe-eng/valet-express.mocha,benvinegar/mocha,pumpupapp/mocha,beni55/mocha,verkkokauppacom/mocha,node-rookie/mocha,luxe-eng/valet-express.mocha,wltsmrz/mocha,hoverduck/mocha,upfrontIO/mocha,netei/mocha,kolodny/mocha,santiagoaguiar/mocha,youprofit/mocha,gaye/mocha,irnc/mocha,KevinTCoughlin/mocha,antoval/mocha,aaroncrows/mocha,KevinTCoughlin/mocha,tswaters/mocha,TimothyGu/mocha,irnc/mocha,hoverduck/mocha,nightwatchjs/mocha-nightwatch,mbovel/mocha,villesau/mocha,ajaykodali/mocha,DeNA/mocha,jasonkarns/mocha,kyroskoh/mocha,GranitB/mocha,gaye/mocha,jkresner/mocha,IveWong/mocha,GerHobbelt/mocha,apkiernan/mocha,kevinburke/mocha,geometrybase/mocha,moander/mocha,Hacker0x01/mocha,papandreou/mocha,menelaos/mocha-solarized,jbnicolai/mocha,sul4bh/mocha,Shyp/mocha,adamgruber/mocha,jasonkarns/mocha,ianwremmel/mocha,phated/mocha,mysterycommand/mocha,JohnnyEstilles/mocha,adamgruber/mocha,GabrielNicolasAvellaneda/mocha,mochajs/mocha,kevinburke/mocha,rstacruz/mocha,Shyp/mocha,upfrontIO/mocha,node-rookie/mocha,ryanshawty/mocha,boneskull/mocha,Shyp/mocha,woodyrew/mocha,ryanshawty/mocha,cleberar38/mocha,DeNA/mocha,Hacker0x01/mocha,antoval/mocha,IveWong/mocha,verkkokauppacom/mocha,aaroncrows/mocha,kolodny/mocha,mponizil/mocha,ajaykodali/mocha,ELLIOTTCABLE/mocha,papandreou/mocha,phated/mocha,rlugojr/mocha,jkresner/mocha,ELLIOTTCABLE/mocha,pumpupapp/mocha,hashcube/mocha,moander/mocha,nexdrew/mocha,rstacruz/mocha,diydyq/mocha,diydyq/mocha,santiagoaguiar/mocha,boneskull/mocha,kolodny/mocha,GerHobbelt/mocha,aaroncrows/mocha,nexdrew/mocha,rstacruz/mocha,Khan/mocha,igwejk/mocha,duncanbeevers/mocha,irnc/mocha,upfrontIO/mocha,IveWong/mocha,hashcube/mocha,ianwremmel/mocha