plugins: overlay: use proper NULL check on double pointer

Check the address of the variable is not NULL,
not the address of the pointer.

diff --git a/gst/vaapi/gstvaapioverlay.c b/gst/vaapi/gstvaapioverlay.c
index f3baf75..b478d43 100644 (file)
--- a/gst/vaapi/gstvaapioverlay.c
+++ b/gst/vaapi/gstvaapioverlay.c
@@ -446,7 +446,7 @@ gst_vaapi_overlay_create_output_buffer (GstVideoAggregator * vagg,
 
   *outbuf = NULL;
   if ((gst_buffer_pool_acquire_buffer (pool, outbuf, NULL) != GST_FLOW_OK)
-      || !outbuf) {
+      || !*outbuf) {
     GST_ERROR_OBJECT (overlay, "failed to create output video buffer");
     return GST_FLOW_ERROR;
   }