---
This is to silence this warning (which, admittedly, could also be ignored)

cbs_h2645.c:1007:58: warning: variable 'sps_ext' is uninitialized when used 
here [-Wuninitialized]
    err = cbs_h264_write_sps_extension(ctx, pbc, sps_ext);
                                                    ^~~~~~~
cbs_h2645.c:1005:41: note: initialize the variable 'sps_ext' to silence this 
warning
    H264RawSPSExtension *sps_ext;
                        ^
                                = NULL

 libavcodec/cbs_h2645.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/cbs_h2645.c b/libavcodec/cbs_h2645.c
index 50a227da78..6fe138188a 100644
--- a/libavcodec/cbs_h2645.c
+++ b/libavcodec/cbs_h2645.c
@@ -1002,7 +1002,7 @@ static int cbs_h264_write_nal_unit(CodedBitstreamContext 
*ctx,
 
     case H264_NAL_SPS_EXT:
         {
-            H264RawSPSExtension *sps_ext;
+            H264RawSPSExtension *sps_ext = NULL;
 
             err = cbs_h264_write_sps_extension(ctx, pbc, sps_ext);
             if (err < 0)
-- 
2.14.1

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