From b9c2b8c9a9153a2f0d896c62444d617de6d065d8 Mon Sep 17 00:00:00 2001
From: Sylvain Berfini <sylvain.berfini@belledonne-communications.com>
Date: Thu, 15 Feb 2018 13:56:48 +0100
Subject: [PATCH] Do not create a JNI listener if Java one is null

---
 wrappers/java/jni.mustache | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wrappers/java/jni.mustache b/wrappers/java/jni.mustache
index 851aa0236..c1da6d769 100644
--- a/wrappers/java/jni.mustache
+++ b/wrappers/java/jni.mustache
@@ -377,6 +377,7 @@ void Java_{{jniPackage}}{{className}}Impl_setListener(JNIEnv* env, jobject thiz,
 
 {{#isMultiListener}}
 void Java_{{jniPackage}}{{className}}Impl_addListener(JNIEnv* env, jobject thiz, jlong ptr, jobject jlistener) {
+	if (jlistener == NULL) return;
 	{{classCName}} *cptr = ({{classCName}}*)ptr;
 	jobject listener = env->NewGlobalRef(jlistener);
 	{{classCName}}Cbs *cbs = linphone_factory_create_{{factoryName}}_cbs(NULL);