Be more careful freeing taxonomy data

We want to only access data that we consider valid. And we need to clear
out pointers to freed memory.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/qt-ui/mainwindow.cpp b/qt-ui/mainwindow.cpp
index 2ea4766ab..305ddf6dc 100644
--- a/qt-ui/mainwindow.cpp
+++ b/qt-ui/mainwindow.cpp
@@ -631,6 +631,7 @@ void MainWindow::setupForAddAndPlan(const char *model)
 {
 	// clean out the dive and give it an id and the correct dc model
 	clear_dive(&displayed_dive);
+	clear_dive_site(&displayed_dive_site);
 	displayed_dive.id = dive_getUniqID(&displayed_dive);
 	displayed_dive.when = QDateTime::currentMSecsSinceEpoch() / 1000L + gettimezoneoffset() + 3600;
 	displayed_dive.dc.model = model; // don't translate! this is stored in the XML file