Do something half-way sane (no SIGSEGV) when there are no dives

It just leaves ugly blank areas, but whatever.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/info.c b/info.c
index efd17f896..bef3f1dba 100644
--- a/info.c
+++ b/info.c
@@ -12,6 +12,13 @@ void update_dive_info(struct dive *dive)
 	struct tm *tm;
 	char buffer[80];
 
+	if (!dive) {
+		gtk_entry_set_text(GTK_ENTRY(datetime), "no dive");
+		gtk_entry_set_text(GTK_ENTRY(depth), "");
+		gtk_entry_set_text(GTK_ENTRY(duration), "");
+		return;
+	}
+
 	tm = gmtime(&dive->when);
 	snprintf(buffer, sizeof(buffer),
 		"%04d-%02d-%02d "