Initialize / reset selected_dive to -1

The value of 0 that we used is actually a valid value and could cause
confusion.

Suggested-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/gtk-gui.c b/gtk-gui.c
index 2797b8fa6..b8d749858 100644
--- a/gtk-gui.c
+++ b/gtk-gui.c
@@ -268,7 +268,7 @@ static void file_close(GtkWidget *w, gpointer data)
 	mark_divelist_changed(FALSE);
 
 	/* clear the selection and the statistics */
-	selected_dive = 0;
+	selected_dive = -1;
 	process_selected_dives();
 	clear_stats_widgets();
 	clear_events();