Remove debug log spam in digestmd5 plugin

ldapmodify, ldappasswd and ldapsearch could log:
DIGEST-MD5 common mech free

This is reproducable with an anonymous ldapsearch.

Backport the upstream patch to remove the debug line.

Resolves: RHEL-85566

Signed-off-by: Rob Crittenden <rcritten@redhat.com>

cyrus-sasl-2.1.27-remove-debug-log-mech-free.patch

@@ -0,0 +1,29 @@
+Forwarded: https://github.com/cyrusimap/cyrus-sasl/pull/721
+From: Bastian Germann <bage@debian.org>
+Date: Thu, 14 Apr 2022 12:28:40 +0200
+Subject: plugins/digestmd5: Remove debug log "mech free"
+
+The "DIGEST-MD5 common mech free" debug log message is bothering many users.
+It is not really helpful, so drop it.
+
+Fixes #386.
+
+Signed-off-by: Bastian Germann <bage@debian.org>
+---
+ plugins/digestmd5.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/plugins/digestmd5.c b/plugins/digestmd5.c
+index c6b54317..be949dce 100644
+--- a/plugins/digestmd5.c
++++ b/plugins/digestmd5.c
+@@ -1762,9 +1762,6 @@ static void digestmd5_common_mech_free(void *glob_context,
+     reauth_cache_t *reauth_cache = my_glob_context->reauth;
+     size_t n;
+ 
+-    utils->log(utils->conn, SASL_LOG_DEBUG,
+-	       "DIGEST-MD5 common mech free");
+- 
+     /* Prevent anybody else from freeing this as well */
+     my_glob_context->reauth = NULL;
+ 

cyrus-sasl.spec

@@ -43,6 +43,7 @@ Patch500: cyrus-sasl-2.1.27-coverity.patch
 Patch501: cyrus-sasl-2.1.27-cumulative-digestmd5.patch
 Patch502: cyrus-sasl-2.1.27-cumulative-ossl3.patch
 Patch503: cyrus-sasl-2.1.28-SAST.patch
+Patch504: cyrus-sasl-2.1.27-remove-debug-log-mech-free.patch
 
 Patch599: cyrus-sasl-2.1.28-fedora-c99.patch
 
@@ -164,6 +165,7 @@ the GS2 authentication scheme.
 %patch501 -p1 -b .digestmd5
 %patch502 -p1 -b .ossl3
 %patch503 -p1 -b .sast
+%patch504 -p1 -b .logspam
 %patch599 -p1 -b .c99
 
 %build