Fix spec to pass on JRuby.
Fix spec to pass on JRuby.

For some reason, this `load` wasn’t working as written on JRuby.
xmik/rspec-core,azbshiri/rspec-core,xmik/rspec-core,Teino1978-Corp/Teino1978-Corp-rspec-core,xmik/rspec-core,Teino1978-Corp/Teino1978-Corp-rspec-core,rspec/rspec-core,azbshiri/rspec-core,Teino1978-Corp/Teino1978-Corp-rspec-core,rspec/rspec-core,rspec/rspec-core,azbshiri/rspec-core