File build-fix-old-gcc.patch of Package libgsasl

From fde722a4036cba8d7bdf72f50e159e543e54a8c4 Mon Sep 17 00:00:00 2001
From: Simon Josefsson <simon@josefsson.org>
Date: Sun, 24 Oct 2021 18:31:48 +0200
Subject: [PATCH] cicd: Fix builds.

---
 .gitlab-ci.yml      |  2 +-
 lib/src/mechtools.c | 13 ++++++-------
 2 files changed, 7 insertions(+), 8 deletions(-)

--- a/src/mechtools.c
+++ b/src/mechtools.c
@@ -225,17 +225,16 @@ _gsasl_gs2_generate_header (bool nonstd, char cbflag,
 void
 _gsasl_hex_encode (const char *in, size_t inlen, char *out)
 {
-  size_t i;
-  const char *p = in;
+  static const char trans[] = "0123456789abcdef";
 
-  for (i = 0; i < 2 * inlen;)
+  while (inlen--)
     {
-      unsigned char c = *p++;
-      out[i++] = "0123456789abcdef"[c >> 4];
-      out[i++] = "0123456789abcdef"[c & 0x0f];
+      unsigned char c = *in++;
+      *out++ = trans[(c >> 4) & 0xf];
+      *out++ = trans[c & 0xf];
     }
 
-  out[i] = '\0';
+  *out = '\0';
 }
 
 static char
-- 
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