Fixed demo for video files: is used do_nms_sort() instead of do_nms_obj().

AlexeyAB

2018-05-21 46028c6621f1a75874054db23dfa103a7759a483

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val_eq (Val.add (Val.add (r3 PC) Vone) Vone) (Val.add (x2 PC) Vone)
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