Add patch to fix bug which caused a failing test.

Add patch from https://github.com/zmanda/amanda/pull/176 which fixes a
bug that caused the hexencode test to fail.
Thanks to Peter Bieringer.

176.patch

@@ -0,0 +1,26 @@
+From 262c05b20c7de243542e7502e00152cdafb573d4 Mon Sep 17 00:00:00 2001
+From: Peter Bieringer <pb@bieringer.de>
+Date: Wed, 6 Jul 2022 22:53:12 +0200
+Subject: [PATCH] fix for https://github.com/zmanda/amanda/issues/167
+
+---
+ common-src/amutil.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/common-src/amutil.c b/common-src/amutil.c
+index 20454ab73c..371d38e433 100644
+--- a/common-src/amutil.c
++++ b/common-src/amutil.c
+@@ -1132,6 +1132,12 @@ char *hexdecode_string(const char *str, GError **err)
+     new_len = orig_len = strlen(str);
+     for (i = 0; i < orig_len; i++) {
+         if (str[i] == '%') {
++            if (new_len < 2) {
++                g_set_error(err, am_util_error_quark(), AM_UTIL_ERROR_HEXDECODEINVAL,
++                    "Invalid hexcode string: %s", str);
++                s = g_string_sized_new(0);
++                goto cleanup;
++            }
+             new_len -= 2;
+         }
+     }

amanda.spec

@@ -16,7 +16,7 @@
 Summary:       A network-capable tape backup solution
 Name:          amanda
 Version:       3.5.1
-Release:       34%{?dist}
+Release:       35%{?dist}
 Source:        http://downloads.sourceforge.net/amanda/amanda-%{version}.tar.gz
 Source1:       amanda.crontab
 Source4:       disklist
@@ -44,6 +44,11 @@ Patch6:        patch-xfsrestore-housekeeping
 # Add missing extern keyword to global vars in header files
 Patch7:        amanda-missing-extern.patch
 
+
+# Patch from upstream pull request https://github.com/zmanda/amanda/pull/176
+# to fix a bug which appears as a failing test case
+Patch8:        https://patch-diff.githubusercontent.com/raw/zmanda/amanda/pull/176.patch
+
 License:       BSD and GPLv3+ and GPLv2+ and GPLv2
 URL:           http://www.amanda.org
 BuildRequires: automake autoconf libtool
@@ -453,6 +458,10 @@ make check
 
 
 %changelog
+* Thu Jul 07 2022 Jason L Tibbitts III <j@tib.bs> - 3.5.1-35
+- Add patch to fix bug which caused a failing test.  Thanks to Peter Bieringer
+  for the patch.
+
 * Wed Jan 19 2022 Fedora Release Engineering <releng@fedoraproject.org> - 3.5.1-34
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild