From 3e2949d15756a78fa1613bea9abaa0150953b95d Mon Sep 17 00:00:00 2001
From: evazion <noizave@gmail.com>
Date: Sun, 24 May 2020 12:06:34 -0500
Subject: [PATCH] uploads: fix exception when uploading gifs.

Older versions of libvips don't support get("n-pages"). This is known to
fail in libvips-8.4 and known to work in libvips-8.8.
---
 app/logical/media_file/image.rb | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/app/logical/media_file/image.rb b/app/logical/media_file/image.rb
index 7b26b52b5..a5125e3bf 100644
--- a/app/logical/media_file/image.rb
+++ b/app/logical/media_file/image.rb
@@ -53,6 +53,9 @@ class MediaFile::Image < MediaFile
 
   def is_animated_gif?
     file_ext == :gif && image.get("n-pages") > 1
+  # older versions of libvips that don't support n-pages will raise an error
+  rescue Vips::Error
+    false
   end
 
   def is_animated_png?