From f178f861eeaf4d1ef62232432bf7d9f962d7cd29 Mon Sep 17 00:00:00 2001
From: dodmi <4572946+dodmi@users.noreply.github.com>
Date: Thu, 23 Nov 2023 21:58:37 +0100
Subject: [PATCH] added type check

---
 modules/dkimVerifier.jsm.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/dkimVerifier.jsm.js b/modules/dkimVerifier.jsm.js
index d4c151a8..6e093708 100644
--- a/modules/dkimVerifier.jsm.js
+++ b/modules/dkimVerifier.jsm.js
@@ -1066,7 +1066,7 @@ var Verifier = (function() {
 		var headerCanonAlgo;
 		switch (DKIMSignature.c_header) {
 			case "simple":
-				headerCanonAlgo = function (headerField) {return headerField;};
+				headerCanonAlgo = function (/** @type {string} */ headerField) {return headerField;};
 				break;
 			case "relaxed":
 				headerCanonAlgo = canonicalizationHeaderFieldRelaxed;