Return correct exit status of ujs test
Return correct exit status of ujs test

The `Process::Status#to_i` returns the bits in stat. If need exit status,
need to use `#exitstatus`.
Ref: https://ruby-doc.org/core-2.4.0/Process/Status.html#method-i-to_i

rafaelfranca/omg-rails,esparta/rails,yhirano55/rails,fabianoleittes/rails,MSP-Greg/rails,palkan/rails,BlakeWilliams/rails,schuetzm/rails,baerjam/rails,joonyou/rails,iainbeeston/rails,yahonda/rails,Edouard-chin/rails,notapatch/rails,georgeclaghorn/rails,illacceptanything/illacceptanything,yasslab/railsguides.jp,mechanicles/rails,illacceptanything/illacceptanything,repinel/rails,rafaelfranca/omg-rails,Vasfed/rails,illacceptanything/illacceptanything,fabianoleittes/rails,odedniv/rails,printercu/rails,pvalena/rails,Edouard-chin/rails,tjschuck/rails,Edouard-chin/rails,Edouard-chin/rails,arunagw/rails,yawboakye/rails,fabianoleittes/rails,kddeisz/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,eileencodes/rails,georgeclaghorn/rails,yahonda/rails,eileencodes/rails,Stellenticket/rails,mohitnatoo/rails,yhirano55/rails,Envek/rails,untidy-hair/rails,betesh/rails,travisofthenorth/rails,bogdanvlviv/rails,yalab/rails,printercu/rails,shioyama/rails,baerjam/rails,schuetzm/rails,assain/rails,illacceptanything/illacceptanything,kmcphillips/rails,utilum/rails,yalab/rails,jeremy/rails,Erol/rails,untidy-hair/rails,betesh/rails,prathamesh-sonpatki/rails,utilum/rails,vipulnsward/rails,Erol/rails,eileencodes/rails,palkan/rails,shioyama/rails,illacceptanything/illacceptanything,palkan/rails,georgeclaghorn/rails,aditya-kapoor/rails,travisofthenorth/rails,gauravtiwari/rails,lcreid/rails,Stellenticket/rails,deraru/rails,mechanicles/rails,notapatch/rails,BlakeWilliams/rails,notapatch/rails,jeremy/rails,kmcphillips/rails,prathamesh-sonpatki/rails,starknx/rails,gauravtiwari/rails,iainbeeston/rails,aditya-kapoor/rails,esparta/rails,EmmaB/rails-1,mohitnatoo/rails,esparta/rails,bogdanvlviv/rails,georgeclaghorn/rails,fabianoleittes/rails,jeremy/rails,schuetzm/rails,kddeisz/rails,betesh/rails,kmcphillips/rails,shioyama/rails,printercu/rails,travisofthenorth/rails,vipulnsward/rails,Stellenticket/rails,rails/rails,lcreid/rails,Vasfed/rails,repinel/rails,jeremy/rails,arunagw/rails,deraru/rails,Erol/rails,EmmaB/rails-1,odedniv/rails,assain/rails,flanger001/rails,gfvcastro/rails,kmcphillips/rails,gfvcastro/rails,iainbeeston/rails,utilum/rails,joonyou/rails,bogdanvlviv/rails,bogdanvlviv/rails,deraru/rails,yalab/rails,brchristian/rails,pvalena/rails,prathamesh-sonpatki/rails,Stellenticket/rails,EmmaB/rails-1,brchristian/rails,kirs/rails-1,yahonda/rails,Envek/rails,printercu/rails,kddeisz/rails,tjschuck/rails,yawboakye/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,MSP-Greg/rails,mechanicles/rails,illacceptanything/illacceptanything,palkan/rails,tgxworld/rails,odedniv/rails,vipulnsward/rails,gauravtiwari/rails,kirs/rails-1,assain/rails,gfvcastro/rails,mechanicles/rails,starknx/rails,eileencodes/rails,untidy-hair/rails,mohitnatoo/rails,starknx/rails,flanger001/rails,Envek/rails,illacceptanything/illacceptanything,yhirano55/rails,yasslab/railsguides.jp,iainbeeston/rails,Vasfed/rails,flanger001/rails,schuetzm/rails,baerjam/rails,BlakeWilliams/rails,tjschuck/rails,yasslab/railsguides.jp,joonyou/rails,yawboakye/rails,illacceptanything/illacceptanything,BlakeWilliams/rails,yawboakye/rails,illacceptanything/illacceptanything,flanger001/rails,utilum/rails,shioyama/rails,repinel/rails,illacceptanything/illacceptanything,arunagw/rails,rails/rails,Erol/rails,yalab/rails,rafaelfranca/omg-rails,betesh/rails,vipulnsward/rails,prathamesh-sonpatki/rails,lcreid/rails,mohitnatoo/rails,rails/rails,untidy-hair/rails,gfvcastro/rails,arunagw/rails,tgxworld/rails,travisofthenorth/rails,repinel/rails,baerjam/rails,lcreid/rails,Envek/rails,yahonda/rails,assain/rails,tgxworld/rails,yasslab/railsguides.jp,esparta/rails,pvalena/rails,kddeisz/rails,aditya-kapoor/rails,joonyou/rails,pvalena/rails,deraru/rails,notapatch/rails,MSP-Greg/rails,brchristian/rails,illacceptanything/illacceptanything,aditya-kapoor/rails,rails/rails,tgxworld/rails,yhirano55/rails,Vasfed/rails,MSP-Greg/rails,kirs/rails-1,tjschuck/rails