fate/oggopus-demux: fix fate failure

Failure was due to the extra comment printed by libavcodec/utils.c since
side data is used to signal the skipped samples.

tests/ref/fate/oggopus-demux

@@ -5,7 +5,7 @@
 #sample_rate 0: 48000
 #channel_layout 0: 3
 #channel_layout_name 0: stereo
-0,       -356,       -356,      960,      402, 0x89b1c40f
+0,       -356,       -356,      960,      402, 0x89b1c40f, S=1,       10, 0x03f10065
 0,        604,        604,      960,      216, 0x7bf97146
 0,       1564,       1564,      960,      215, 0x6cb86d8b
 0,       2524,       2524,      960,      218, 0x9cfd691c