From 77a1b6a3269869ec814a272fb6179cf2c7b257d7 Mon Sep 17 00:00:00 2001
From: falkTX <falktx@falktx.com>
Date: Wed, 14 Apr 2021 16:37:51 +0100
Subject: [PATCH] Fix jackd crash with zalsa when closing if client was not
 activated

Signed-off-by: falkTX <falktx@falktx.com>
---
 tools/zalsa/zita-a2j.cc | 1 +
 tools/zalsa/zita-j2a.cc | 1 +
 2 files changed, 2 insertions(+)

diff --git a/tools/zalsa/zita-a2j.cc b/tools/zalsa/zita-a2j.cc
index 7fa56c39..de472fca 100644
--- a/tools/zalsa/zita-a2j.cc
+++ b/tools/zalsa/zita-a2j.cc
@@ -320,6 +320,7 @@ jack_initialize (jack_client_t* client, const char* load_init)
 
 void jack_finish (void* arg)
 {
+	if (!arg) return;
 	Jackclient *J = (Jackclient *)arg;
 	zita_a2j *c = (zita_a2j *)J->getarg();
 	c->jack_finish(arg);
diff --git a/tools/zalsa/zita-j2a.cc b/tools/zalsa/zita-j2a.cc
index 28b41bf1..a3800330 100644
--- a/tools/zalsa/zita-j2a.cc
+++ b/tools/zalsa/zita-j2a.cc
@@ -318,6 +318,7 @@ jack_initialize (jack_client_t* client, const char* load_init)
 
 void jack_finish (void* arg)
 {
+	if (!arg) return;
 	Jackclient *J = (Jackclient *)arg;
 	zita_j2a *c = (zita_j2a *)J->getarg();
 	c->jack_finish(arg);