using isnan instead of d==d, to signal correctly parsed option
using isnan instead of d==d, to signal correctly parsed option

git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@10406 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg