jtag/core, target: unregister JTAG events

Also call adapter_exit() before command_exit() as the latter releases
Jim interpreter so JTAG events should be released before.

Fixes memory leak reported by valgrind

Change-Id: I493f3fcba34ea2b4234148e79a4e329c866e0f05
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/4474
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>

src/jtag/core.c

@@ -1308,6 +1308,14 @@ void jtag_tap_free(struct jtag_tap *tap)
 {
 	jtag_unregister_event_callback(&jtag_reset_callback, tap);
 
+	struct jtag_tap_event_action *jteap = tap->event_action;
+	while (jteap) {
+		struct jtag_tap_event_action *next = jteap->next;
+		Jim_DecrRefCount(jteap->interp, jteap->body);
+		free(jteap);
+		jteap = next;
+	}
+
 	free(tap->expected);
 	free(tap->expected_mask);
 	free(tap->expected_ids);

src/openocd.c

@@ -359,11 +359,11 @@ int openocd_main(int argc, char *argv[])
 
 	unregister_all_commands(cmd_ctx, NULL);
 
+	adapter_quit();
+
 	/* Shutdown commandline interface */
 	command_exit(cmd_ctx);
 
-	adapter_quit();
-
 	free_config();
 
 	if (ERROR_FAIL == ret)

src/target/target.c

@@ -1893,6 +1893,8 @@ static void target_destroy(struct target *target)
 	if (target->type->deinit_target)
 		target->type->deinit_target(target);
 
+	jtag_unregister_event_callback(jtag_enable_callback, target);
+
 	struct target_event_action *teap = target->event_action;
 	while (teap) {
 		struct target_event_action *next = teap->next;