* test/ruby/test_process.rb (test_deadlock_by_signal_at_forking):
  extend timeout seconds to 60 for RGENGC_CHECK_MODE > 0 environment.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48859 b2dd03c8-39d4-4d8f-98ff-823fe69b080e