Allow ambiguosity of `return` line

spec/ruby/core/tracepoint/inspect_spec.rb

@@ -67,7 +67,7 @@ describe 'TracePoint#inspect' do
       end
       trace_point_spec_test_return
     end
-    ruby_version_is("3.4") { line -= 1 }
+    ruby_version_is("3.4") { line = "(?:#{line}|#{line-1})" }
 
     inspect.should =~ /\A#<TracePoint:return [`']trace_point_spec_test_return'#{@path_prefix}#{__FILE__}:#{line}>\z/
   end