hwcontext_opencl: Only release command queue if it exists

If the frames context creation fails then the command queue reference
need not exist when uninit is called.

diff --git a/libavutil/hwcontext_opencl.c b/libavutil/hwcontext_opencl.c
index 728877553f8207aa81a3b5f49c129bfe86dc23e0..be71c8323e782d4999863eee5da6ceb5c54ef3e1 100644 (file)
--- a/libavutil/hwcontext_opencl.c
+++ b/libavutil/hwcontext_opencl.c
@@ -1726,10 +1726,13 @@ static void opencl_frames_uninit(AVHWFramesContext *hwfc)
     av_freep(&priv->mapped_frames);
 #endif
 
-    cle = clReleaseCommandQueue(priv->command_queue);
-    if (cle != CL_SUCCESS) {
-        av_log(hwfc, AV_LOG_ERROR, "Failed to release frame "
-               "command queue: %d.\n", cle);
+    if (priv->command_queue) {
+        cle = clReleaseCommandQueue(priv->command_queue);
+        if (cle != CL_SUCCESS) {
+            av_log(hwfc, AV_LOG_ERROR, "Failed to release frame "
+                   "command queue: %d.\n", cle);
+        }
+        priv->command_queue = NULL;
     }
 }