Merge commit '3160bdc7'

* commit '3160bdc7':
  huffyuv: Use avpriv_report_missing_feature() where appropriate

Conflicts:
	libavcodec/huffyuvdec.c

Not merged, the error messages are not about missing support of features
of the input file. avpriv_report_missing_feature() speaks about
"... your file has a feature which has not been implemented"
Thats would simply not be correct
Merged-by: Michael Niedermayer <michaelni@gmx.at>