Import diff from https://github.com/sisimai/p5-Sisimai/pull/233/files#diff-5b98a950041c7bde159d4ed8ce7105a1
Import diff from https://github.com/sisimai/p5-Sisimai/pull/233/files#diff-5b98a950041c7bde159d4ed8ce7105a1

azumakuniyuki/rb-Sisimai,azumakuniyuki/rb-Sisimai