Do not leak memory in sample server (#852755)

cyrus-sasl-2.1.26-sample-leak.patch

@@ -0,0 +1,13 @@
+diff --git a/sample/server.c b/sample/server.c
+index f5aff68..6c684af 100644
+--- a/sample/server.c
++++ b/sample/server.c
+@@ -227,6 +227,8 @@ int mysasl_negotiate(FILE *in, FILE *out, sasl_conn_t *conn)
+ 
+     /* send capability list to client */
+     send_string(out, data, len);
++    if (mech)
++		free(data);
+ 
+     dprintf(1, "waiting for client mechanism...\n");
+     len = recv_string(in, chosenmech, sizeof chosenmech);

cyrus-sasl.spec

@@ -54,6 +54,8 @@ Patch51: cyrus-sasl-2.1.26-sql.patch
 Patch52: cyrus-sasl-2.1.26-config-error.patch
 # Treat SCRAM-SHA-1/DIGEST-MD5 as more secure than PLAIN (#970718)
 Patch53: cyrus-sasl-2.1.26-prefer-SCRAM-SHA-1-over-PLAIN.patch
+# Do not leak memory in sample server (#852755)
+Patch54: cyrus-sasl-2.1.26-sample-leak.patch
 
 Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires: autoconf, automake, libtool, gdbm-devel, groff
@@ -198,6 +200,7 @@ chmod -x include/*.h
 %patch51 -p1 -b .sql
 %patch52 -p1 -b .configerr
 %patch53 -p1 -b .sha1vsplain
+%patch54 -p1 -b .leak
 
 
 %build