avfilter/af_afade: Remove impossible branch

Also don't call ff_inlink_queued_samples() unnecessarily often.

Fixes Coverity issue 1427665.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
pull/369/head
Andreas Rheinhardt 3 years ago
parent 797fefa2e5
commit 1f387ae4cb
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