From ea2e517e39e849c7b1e949f87ad263dc13c47714 Mon Sep 17 00:00:00 2001
From: Dirk Hohndel <dirk@hohndel.org>
Date: Mon, 11 Nov 2013 05:54:04 +0900
Subject: [PATCH] Fix crash when cancelling dive add on empty dive list

Don't pass NULL dives around.

Fixes #231

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
---
 qt-ui/models.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/qt-ui/models.cpp b/qt-ui/models.cpp
index 0324fe4ba..22e422273 100644
--- a/qt-ui/models.cpp
+++ b/qt-ui/models.cpp
@@ -320,7 +320,8 @@ void CylindersModel::setDive(dive* d)
 {
 	if (current)
 		clear();
-
+	if (!d)
+		return;
 	int amount = MAX_CYLINDERS;
 	for(int i = 0; i < MAX_CYLINDERS; i++) {
 		cylinder_t *cylinder = &d->cylinder[i];