Revert "lavfi/avfiltergraph: add check before free the format"

This reverts commit f156f4ab2317f22bfef33c7eaead0d5d5f162903.

The checks added by said commit are nonsense because they did not help
in case ff_merge_samplerates() or ff_merge_formats() returned NULL
while freeing one of its arguments: Said freeing does not change
the local variables of can_merge_formats().

Reviewed-by: Nicolas George <george@nsup.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
(cherry picked from commit c4c10feaa8c3604abfec4283715b37358f73b6e7)

0 files changed, 0 insertions, 0 deletions