[rubygems/rubygems] Fix unused variable warning
/Users/deivid/Code/rubygems/rubygems/test/rubygems/test_gem_resolver_installer_set.rb:55: warning: assigned but unused variable - a_1_local
https://github.com/rubygems/rubygems/commit/9ea4534800
[rubygems/rubygems] Fix unused variable warning
https://github.com/rubygems/rubygems/commit/9ea4534800