kmssink: Fix compiler warning with gcc 7

gstkmssink.c: In function ‘gst_kms_sink_get_input_buffer’:
gstkmssink.c:1102:29: error: ‘mems[0]’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
   kmsmem = (GstKMSMemory *) get_cached_kmsmem (mems[0]);
                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

diff --git a/sys/kms/gstkmssink.c b/sys/kms/gstkmssink.c
index 8ddb6e1..82bb639 100644 (file)
--- a/sys/kms/gstkmssink.c
+++ b/sys/kms/gstkmssink.c
@@ -1067,6 +1067,7 @@ gst_kms_sink_import_dmabuf (GstKMSSink * self, GstBuffer * inbuf,
   /* We cannot have multiple dmabuf per plane */
   if (n_mem > n_planes)
     return FALSE;
+  g_assert (n_planes != 0);
 
   /* Update video info based on video meta */
   if (meta) {