From 818f70534a28c63ce86989b33b1a4f8a77395d06 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Tue, 16 Mar 2021 14:14:20 +0100
Subject: CrystFELImageView: Avoid crash when scrolling after image load
 failure

---
 src/crystfelimageview.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/crystfelimageview.c b/src/crystfelimageview.c
index d5c0b51f..6d6cbd60 100644
--- a/src/crystfelimageview.c
+++ b/src/crystfelimageview.c
@@ -133,6 +133,8 @@ static gint scroll_sig(GtkWidget *window, GdkEventScroll *event,
 	int claim = FALSE;
 	int zoom_allowed = 1;
 
+	if ( iv->image == NULL ) return FALSE;
+
 	if ( event->direction == GDK_SCROLL_UP ) {
 		zoom_scale = 1.1;
 		claim = TRUE;
-- 
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