test_rubyoptions.rb: split regexps

* test/ruby/test_rubyoptions.rb (SEGVTest::ExpectedStderrList):
  split backtrace information regexps.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47927 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_rubyoptions.rb

@@ -531,7 +531,8 @@ class TestRubyOptions < Test::Unit::TestCase
         -e:1:in\s\`<main>\'\n
         -e:1:in\s\`kill\'\n
         )?
-        \n
+      )x,
+      %r(
         (?:
           --\sC\slevel\sbacktrace\sinformation\s-------------------------------------------\n
           (?:(?:.*\s)?\[0x\h+\]\n)*\n