From e894340a6462a5675819f44e6df1d4b74018fac1 Mon Sep 17 00:00:00 2001
From: Daniel Pouzzner <douzzer@wolfssl.com>
Date: Mon, 4 Oct 2021 17:10:28 -0500
Subject: [PATCH] tls13.c: mac2hash(): accommodate scenario where all hashes
 are gated out of the build (peer review).

---
 src/tls13.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/tls13.c b/src/tls13.c
index 4d8444c2e..5d7ad4bf1 100644
--- a/src/tls13.c
+++ b/src/tls13.c
@@ -332,7 +332,7 @@ static int DeriveKey(WOLFSSL* ssl, byte* output, int outputLen,
  */
 static WC_INLINE int mac2hash(int mac)
 {
-    int hash = WC_HASH_TYPE_NONE;
+    int hash;
     switch (mac) {
         #ifndef NO_SHA256
         case sha256_mac:
@@ -351,6 +351,8 @@ static WC_INLINE int mac2hash(int mac)
             hash = WC_SHA512;
             break;
         #endif
+    default:
+        hash = WC_HASH_TYPE_NONE;
     }
     return hash;
 }