bin/prepare_coverage in u-struct-1.0.0 vs bin/prepare_coverage in u-struct-1.1.0

@@ -1,24 +1,22 @@
 #!/usr/bin/env ruby
 # frozen_string_literal: true
+
 # Borrowed from https://gist.github.com/qortex/7e7c49f3731391a91ee898336183acef
 
 # Temporary hack to get CodeClimate to work with SimpleCov 0.18 JSON format until issue is fixed
 # upstream: https://github.com/codeclimate/test-reporter/issues/413
 
-require "json"
+require 'json'
 
-filename = "coverage/.resultset.json"
+filename = 'coverage/.resultset.json'
 contents = JSON.parse(File.read(filename))
 
 def remove_lines_key(obj)
-  case obj
-  when Hash
-    obj.transform_values do |val|
-      val.is_a?(Hash) && val.key?("lines") ? val["lines"] : remove_lines_key(val)
-    end
-  else
-    obj
+  return obj unless obj.is_a?(Hash)
+
+  obj.transform_values do |val|
+    val.is_a?(Hash) && val.key?('lines') ? val['lines'] : remove_lines_key(val)
   end
 end
 
 # overwrite
 File.write(filename, JSON.generate(remove_lines_key(contents)))