Add 'set -e' to the Travis OSX script.
Add 'set -e' to the Travis OSX script.

This ensures that the script actually fails if the build didn't succeed.

paulrouget/servo,tafia/servo,indykish/servo,cbrewster/servo,vks/servo,AnthonyBroadCrawford/servo,sadmansk/servo,s142857/servo,deokjinkim/servo,upsuper/servo,s142857/servo,evilpie/servo,RenaudParis/servo,zentner-kyle/servo,akosel/servo,larsbergstrom/servo,bjwbell/servo,dati91/servo,srbhklkrn/SERVOENGINE,thiagopnts/servo,hyowon/servo,jimberlage/servo,kindersung/servo,A-deLuna/servo,steveklabnik/servo,pyecs/servo,wpgallih/servo,paulrouget/servo,chotchki/servo,zhangjunlei26/servo,nerith/servo,pyfisch/servo,kindersung/servo,indykish/servo,RenaudParis/servo,brendandahl/servo,mukilan/servo,caldwell/servo,jgraham/servo,fiji-flo/servo,GreenRecycleBin/servo,szeged/servo,rnestler/servo,peterjoel/servo,zhangjunlei26/servo,jdramani/servo,snf/servo,runarberg/servo,peterjoel/servo,Adenilson/prototype-viewing-distance,evilpie/servo,jlegendary/servo,canaltinova/servo,nnethercote/servo,bjwbell/servo,echochamber/servo,pyecs/servo,peterjoel/servo,ruud-v-a/servo,srbhklkrn/SERVOENGINE,ConnorGBrewster/servo,tafia/servo,splav/servo,samfoo/servo,jimberlage/servo,Shraddha512/servo,upsuper/servo,snf/servo,luniv/servo,dvberkel/servo,aidanhs/servo,hyowon/servo,pgonda/servo,mattnenterprise/servo,walac/servo,szeged/servo,dhananjay92/servo,dhananjay92/servo,dsandeephegde/servo,zentner-kyle/servo,saratang/servo,s142857/servo,codemac/servo,mt2d2/servo,aweinstock314/servo,indykish/servo,aidanhs/servo,rixrix/servo,runarberg/servo,notriddle/servo,tempbottle/servo,jdramani/servo,RenaudParis/servo,KiChjang/servo,GyrosOfWar/servo,DominoTree/servo,hyowon/servo,fiji-flo/servo,notriddle/servo,snf/servo,GyrosOfWar/servo,nnethercote/servo,saneyuki/servo,bfrohs/servo,indykish/servo,caldwell/servo,wpgallih/servo,steveklabnik/servo,avadacatavra/servo,mukilan/servo,evilpie/servo,mukilan/servo,dsandeephegde/servo,dati91/servo,saneyuki/servo,cbrewster/servo,rixrix/servo,karlito40/servo,rentongzhang/servo,pgonda/servo,froydnj/servo,szeged/servo,rentongzhang/servo,dhananjay92/servo,SimonSapin/servo,avadacatavra/servo,ryancanhelpyou/servo,GreenRecycleBin/servo,zentner-kyle/servo,GreenRecycleBin/servo,KiChjang/servo,karlito40/servo,nnethercote/servo,pyecs/servo,luniv/servo,DominoTree/servo,SimonSapin/servo,mt2d2/servo,jdramani/servo,jgraham/servo,dmarcos/servo,pyecs/servo,upsuper/servo,mdibaiee/servo,avadacatavra/servo,A-deLuna/servo,jimberlage/servo,caldwell/servo,rixrix/servo,juzer10/servo,hyowon/servo,mattnenterprise/servo,GreenRecycleBin/servo,dmarcos/servo,upsuper/servo,emilio/servo,thiagopnts/servo,caldwell/servo,rixrix/servo,anthgur/servo,thiagopnts/servo,juzer10/servo,michaelwu/servo,GreenRecycleBin/servo,emilio/servo,rnestler/servo,dsandeephegde/servo,froydnj/servo,cbrewster/servo,srbhklkrn/SERVOENGINE,emilio/servo,notriddle/servo,pyecs/servo,dhananjay92/servo,g-k/servo,avadacatavra/servo,runarberg/servo,tempbottle/servo,SimonSapin/servo,RenaudParis/servo,dvberkel/servo,luniv/servo,meh/servo,tschneidereit/servo,ryancanhelpyou/servo,KiChjang/servo,walac/servo,saratang/servo,larsbergstrom/servo,ConnorGBrewster/servo,nerith/servo,kindersung/servo,tafia/servo,dmarcos/servo,anthgur/servo,eddyb/servo,larsbergstrom/servo,g-k/servo,paulrouget/servo,mt2d2/servo,pyfisch/servo,paulrouget/servo,rnestler/servo,ConnorGBrewster/servo,g-k/servo,huonw/servo,anthgur/servo,dsandeephegde/servo,runarberg/servo,nerith/servo,mt2d2/servo,nnethercote/servo,walac/servo,aidanhs/servo,anthgur/servo,samfoo/servo,tafia/servo,nerith/servo,steveklabnik/servo,brendandahl/servo,s142857/servo,splav/servo,peterjoel/servo,upsuper/servo,jgraham/servo,KiChjang/servo,wpgallih/servo,froydnj/servo,dagnir/servo,jimberlage/servo,huonw/servo,RenaudParis/servo,jimberlage/servo,huonw/servo,bfrohs/servo,anthgur/servo,youprofit/servo,pgonda/servo,DominoTree/servo,tempbottle/servo,luniv/servo,ryancanhelpyou/servo,Shraddha512/servo,nick-thompson/servo,larsbergstrom/servo,samfoo/servo,kindersung/servo,jgraham/servo,pyfisch/servo,tempbottle/servo,emilio/servo,dhananjay92/servo,cbrewster/servo,huonw/servo,rnestler/servo,echochamber/servo,saneyuki/servo,peterjoel/servo,bjwbell/servo,wartman4404/servo,jimberlage/servo,GyrosOfWar/servo,upsuper/servo,GreenRecycleBin/servo,luniv/servo,samfoo/servo,larsbergstrom/servo,indykish/servo,AnthonyBroadCrawford/servo,j3parker/servo,evilpie/servo,GreenRecycleBin/servo,jlegendary/servo,WriterOfAlicrow/servo,akosel/servo,mdibaiee/servo,dmarcos/servo,dagnir/servo,rentongzhang/servo,deokjinkim/servo,anthgur/servo,DominoTree/servo,peterjoel/servo,bfrohs/servo,pyfisch/servo,vks/servo,runarberg/servo,kindersung/servo,zentner-kyle/servo,steveklabnik/servo,jdramani/servo,peterjoel/servo,szeged/servo,DominoTree/servo,pgonda/servo,aweinstock314/servo,nick-thompson/servo,zentner-kyle/servo,saneyuki/servo,j3parker/servo,GyrosOfWar/servo,peterjoel/servo,RenaudParis/servo,g-k/servo,michaelwu/servo,wartman4404/servo,saratang/servo,tschneidereit/servo,nerith/servo,mattnenterprise/servo,mdibaiee/servo,hyowon/servo,GreenRecycleBin/servo,pgonda/servo,zhangjunlei26/servo,snf/servo,meh/servo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