From d3b03de9ffd0c823f9f1ea6d51b3c13e17ebb345 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Sat, 16 Dec 2017 10:58:10 +0200
Subject: [PATCH] Nullability fix for VideoFormat::to_string() in case Unknown
 is passed

---
 gstreamer-video/src/video_format.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gstreamer-video/src/video_format.rs b/gstreamer-video/src/video_format.rs
index 455c2bf5d..7a7a3ce08 100644
--- a/gstreamer-video/src/video_format.rs
+++ b/gstreamer-video/src/video_format.rs
@@ -83,6 +83,10 @@ impl ::VideoFormat {
     }
 
     pub fn to_string<'a>(&self) -> &'a str {
+        if *self == ::VideoFormat::Unknown {
+            return "UNKNOWN";
+        }
+
         unsafe {
             CStr::from_ptr(ffi::gst_video_format_to_string(self.to_glib()))
                 .to_str()