[DEV] Reader2: avoid blocking on InvalidateNaluBuffer()
[DEV] Reader2: avoid blocking on InvalidateNaluBuffer()

Change-Id: Ie21abc978ffb96188075a889576fa1cddcba60f8
Reviewed-on: https://gerrit.parrot.biz/23850
Reviewed-by: Nicolas Brulez <c7b4d7ddc34318e865922d5ddc9ce680dfb1b14c@parrot.com>

Parrot-Developers/libARStream,Parrot-Developers/libARStream,Parrot-Developers/libARStream