From 404c901f299c4d93cb159a3c44c2977a25408319 Mon Sep 17 00:00:00 2001
From: Alex Musolino <alex@musolino.id.au>
Date: Tue, 15 Dec 2020 20:45:26 +1030
Subject: [PATCH] ico: avoid potential nil pointer dereferences

Bgeticon can fail, leaving the Icon img pointers nil.
---
 sys/src/cmd/jpg/ico.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/src/cmd/jpg/ico.c b/sys/src/cmd/jpg/ico.c
index 7fb270ed3..f8f9c92ff 100644
--- a/sys/src/cmd/jpg/ico.c
+++ b/sys/src/cmd/jpg/ico.c
@@ -535,6 +535,8 @@ eresized(int new)
 	r.max.x = screen->r.min.x;
 	r.min.y = screen->r.min.y + font->height + 2*BORDER;
 	for(icon = h.first; icon != nil; icon = icon->next){
+		if(icon->img == nil)
+			continue;
 		r.min.x = r.max.x + BORDER;
 		r.max.x = r.min.x + Dx(icon->img->r);
 		r.max.y = r.min.y + Dy(icon->img->r);