From eda173b3b089fc6da88c8fb77b9f9bdacb83dfb7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=ADctor=20Manuel=20J=C3=A1quez=20Leal?=
 <vjaquez@igalia.com>
Date: Fri, 17 Jan 2020 12:54:21 +0100
Subject: [PATCH] libs: encoder: unref formats array if none

The formats array is always created, in order to keep the logic and
to avoid broken caps, if this formats array doesn't contain any
elements, it has to be unref and the function should return NULL.
---
 gst-libs/gst/vaapi/gstvaapiencoder.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gst-libs/gst/vaapi/gstvaapiencoder.c b/gst-libs/gst/vaapi/gstvaapiencoder.c
index 771a82b7e6..edc443ab79 100644
--- a/gst-libs/gst/vaapi/gstvaapiencoder.c
+++ b/gst-libs/gst/vaapi/gstvaapiencoder.c
@@ -1577,8 +1577,10 @@ gst_vaapi_encoder_get_surface_attributes (GstVaapiEncoder * encoder,
     }
   }
 
-  if (!attribs.formats)
+  if (attribs.formats->len == 0) {
+    g_array_unref (attribs.formats);
     return NULL;
+  }
 
   if (min_width)
     *min_width = attribs.min_width;