added dns_tkey_destroy

bin/named/main.c

@@ -32,6 +32,7 @@
 
 #include <dns/dbtable.h>
 #include <dns/tsig.h>
+#include <dns/tkey.h>
 #include <dns/result.h>
 
 #include <dst/result.h>
@@ -280,6 +281,7 @@ static void
 cleanup() {
 	destroy_managers();
 	dns_tsig_destroy();
+	dns_tkey_destroy();
 	isc_rwlock_destroy(&ns_g_viewlock);
 	isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_MAIN,
 		      ISC_LOG_NOTICE, "exiting");

bin/tests/tkey_test.c

@@ -345,6 +345,7 @@ main(int argc, char *argv[]) {
 	isc_timermgr_destroy(&timermgr);
 
 	dns_tsig_destroy();
+	dns_tkey_destroy();
 	if (verbose)
 		isc_mem_stats(mctx, stdout);
 	isc_mem_destroy(&mctx);

lib/dns/include/dns/tkey.h

@@ -52,6 +52,12 @@ dns_tkey_init(isc_log_t *lctx, dns_c_ctx_t *cfg, isc_mem_t *mctx);
  *		return codes from dns_name_fromtext()
  */
 
+void
+dns_tkey_destroy(void);
+/*
+ *      Frees all data associated with the TKEY subsystem
+ */
+
 isc_result_t
 dns_tkey_processquery(dns_message_t *msg);
 /*