From f4e319d8a94697f21802e2682085599a93a39a57 Mon Sep 17 00:00:00 2001
From: Mark Thompson <sw@jkqxz.net>
Date: Sat, 25 Nov 2017 15:34:43 +0000
Subject: [PATCH] hwcontext_opencl: Reset internal command queue on
 device_uninit

device_uninit can be called twice if device_init fails.
---
 libavutil/hwcontext_opencl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavutil/hwcontext_opencl.c b/libavutil/hwcontext_opencl.c
index 8754d73939..b00c1b6409 100644
--- a/libavutil/hwcontext_opencl.c
+++ b/libavutil/hwcontext_opencl.c
@@ -883,6 +883,7 @@ static void opencl_device_uninit(AVHWDeviceContext *hwdev)
             av_log(hwdev, AV_LOG_ERROR, "Failed to release internal "
                    "command queue reference: %d.\n", cle);
         }
+        priv->command_queue = NULL;
     }
 }