From 9e5ec6a57bf206fe9384260fc4040867a9bbd71c Mon Sep 17 00:00:00 2001
From: Erik Frojdh <erik.frojdh@gmail.com>
Date: Wed, 16 Jan 2019 11:54:01 +0100
Subject: [PATCH] only destroy sem if it was initialized

---
 slsReceiverSoftware/src/Listener.cpp | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/slsReceiverSoftware/src/Listener.cpp b/slsReceiverSoftware/src/Listener.cpp
index 732d769c1..8dcd6586c 100644
--- a/slsReceiverSoftware/src/Listener.cpp
+++ b/slsReceiverSoftware/src/Listener.cpp
@@ -64,9 +64,12 @@ Listener::Listener(int ind, detectorType dtype, Fifo*& f, runStatus* s,
 
 
 Listener::~Listener() {
-	if (udpSocket) delete udpSocket;
-	sem_post(&semaphore_socket);
-    sem_destroy(&semaphore_socket);
+	if (udpSocket){
+		delete udpSocket;
+		sem_post(&semaphore_socket);
+    	sem_destroy(&semaphore_socket);
+	} 
+
 	if (carryOverPacket) delete [] carryOverPacket;
 	if (listeningPacket) delete [] listeningPacket;
 	ThreadObject::DestroyThread();