Merge commit '9676b9a2cdc4a90611188fc48d8d388e427997c5'

* commit '9676b9a2cdc4a90611188fc48d8d388e427997c5':
  AVOption: remove an unused function parameter.
  filters.texi: restore mistakenly removed section name for noformat
  avfiltergraph: use sizeof(var) instead of sizeof(type)

Merged-by: Michael Niedermayer <michaelni@gmx.at>

diff --cc libavfilter/avfiltergraph.c
Simple merge