From ff2ac805e2b56733e6830e000856f554e7c92170 Mon Sep 17 00:00:00 2001
From: Andrew Belt <andrewpbelt@gmail.com>
Date: Thu, 22 Aug 2019 17:08:47 -0400
Subject: [PATCH] Fix #1510

---
 src/app/PortWidget.cpp | 3 +++
 src/app/RackWidget.cpp | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/src/app/PortWidget.cpp b/src/app/PortWidget.cpp
index 6cfe0440..31dfff90 100644
--- a/src/app/PortWidget.cpp
+++ b/src/app/PortWidget.cpp
@@ -139,6 +139,9 @@ void PortWidget::onDragEnd(const event::DragEnd& e) {
 		return;
 
 	CableWidget* cw = APP->scene->rack->releaseIncompleteCable();
+	if (!cw)
+		return;
+
 	if (cw->isComplete()) {
 		APP->scene->rack->addCable(cw);
 
diff --git a/src/app/RackWidget.cpp b/src/app/RackWidget.cpp
index 6d00f6b2..75ed3952 100644
--- a/src/app/RackWidget.cpp
+++ b/src/app/RackWidget.cpp
@@ -625,6 +625,9 @@ void RackWidget::setIncompleteCable(CableWidget* w) {
 }
 
 CableWidget* RackWidget::releaseIncompleteCable() {
+	if (!incompleteCable)
+		return NULL;
+
 	CableWidget* cw = incompleteCable;
 	cableContainer->removeChild(incompleteCable);
 	incompleteCable = NULL;