Move :nocov: to cover entire branch

Author: JonRowe

lib/rspec/core/configuration_options.rb

@@ -177,15 +177,15 @@ def args_from_options_file(path)
         FlatMap.flat_map(config_lines, &:shellsplit)
       end
 
+      # :nocov:
       def options_file_as_erb_string(path)
         if RUBY_VERSION >= '2.6'
           ERB.new(File.read(path), :trim_mode => '-').result(binding)
         else
-          # :nocov:
           ERB.new(File.read(path), nil, '-').result(binding)
-          # :nocov:
         end
       end
+      # :nocov:
 
       def custom_options_file
         command_line_options[:custom_options_file]