From b42df97edd4b855141f10e21145d471fcc93cad0 Mon Sep 17 00:00:00 2001
From: "K. S. Ernest (iFIre) Lee" <ernest.lee@chibifire.com>
Date: Thu, 30 May 2019 09:08:37 -0700
Subject: [PATCH] Check error code before using FileAccess to create a preview
 and crashing.

---
 editor/editor_resource_preview.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/editor/editor_resource_preview.cpp b/editor/editor_resource_preview.cpp
index 2baad8c904d..6cca0a0ffad 100644
--- a/editor/editor_resource_preview.cpp
+++ b/editor/editor_resource_preview.cpp
@@ -203,7 +203,9 @@ void EditorResourcePreview::_generate_preview(Ref<ImageTexture> &r_texture, Ref<
 			if (has_small_texture) {
 				ResourceSaver::save(cache_base + "_small.png", r_small_texture);
 			}
-			FileAccess *f = FileAccess::open(cache_base + ".txt", FileAccess::WRITE);
+			Error err;
+			FileAccess *f = FileAccess::open(cache_base + ".txt", FileAccess::WRITE, &err);
+			ERR_FAIL_COND(err != OK);
 			f->store_line(itos(thumbnail_size));
 			f->store_line(itos(has_small_texture));
 			f->store_line(itos(FileAccess::get_modified_time(p_item.path)));