Replace deprecated usage of avcodec_alloc_frame() with av_alloc_frame()
Replace deprecated usage of avcodec_alloc_frame() with av_alloc_frame()

Signed-off-by: Derek Buitenhuis <aff7d637ede26ea82e5226e01b697996cc52e526@gmail.com>

dwbuiten/d2vsource,dwbuiten/d2vsource