From 520a9bb879442ee5beab40a4b0eeb91c2ada4235 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Sat, 9 Dec 2017 18:08:57 +0200
Subject: [PATCH] Use downcast_unchecked() for sender in deep-notify signal
 handler

This is guaranteed to be of the correct type.
---
 gstreamer/src/object.rs | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/gstreamer/src/object.rs b/gstreamer/src/object.rs
index 4bda95890..bb7dfc105 100644
--- a/gstreamer/src/object.rs
+++ b/gstreamer/src/object.rs
@@ -7,10 +7,10 @@
 // except according to those terms.
 
 use glib;
-use glib::{Cast, IsA};
+use glib::IsA;
 use glib::translate::ToGlibPtr;
 use glib::signal::SignalHandlerId;
-use glib::object::ObjectExt;
+use glib::object::{Downcast, ObjectExt};
 
 use gobject_ffi;
 
@@ -29,7 +29,12 @@ impl<O: IsA<::Object> + IsA<glib::Object> + glib::value::SetValue> GstObjectExtM
         f: F,
     ) -> SignalHandlerId {
         self.connect("deep-notify", false, move |values| {
-            let obj: O = values[0].get::<glib::Object>().unwrap().downcast().unwrap();
+            let obj: O = unsafe {
+                values[0]
+                    .get::<glib::Object>()
+                    .unwrap()
+                    .downcast_unchecked()
+            };
             let prop_obj: ::Object = values[1].get().unwrap();
 
             let prop_name = unsafe {