From 66864beb77b7f426c2c7741fe761c637a3972aa3 Mon Sep 17 00:00:00 2001
From: David Capello <david@igarastudio.com>
Date: Wed, 5 Feb 2020 12:18:12 -0300
Subject: [PATCH] lua: Fix crash calling app.refresh() from a script using -b
 -script from CLI

---
 src/app/script/app_object.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/app/script/app_object.cpp b/src/app/script/app_object.cpp
index 89d24ebad..f44338727 100644
--- a/src/app/script/app_object.cpp
+++ b/src/app/script/app_object.cpp
@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2018-2019  Igara Studio S.A.
+// Copyright (C) 2018-2020  Igara Studio S.A.
 // Copyright (C) 2015-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -229,7 +229,9 @@ int App_alert(lua_State* L)
 int App_refresh(lua_State* L)
 {
 #ifdef ENABLE_UI
-  app_refresh_screen();
+  app::Context* ctx = App::instance()->context();
+  if (ctx && ctx->isUIAvailable())
+    app_refresh_screen();
 #endif
   return 0;
 }