Fixed Timestamp::operator std::chrono::microseconds issue.
Fixed Timestamp::operator std::chrono::microseconds issue.

Signed-off-by: Matias Fontanini <1fb005255a08e15a25cdaf073db3b7d0ebc46475@gmail.com>

hanw/libtins,rklabs/libtins,salessandri/libtins,mfontanini/libtins,salessandri/libtins,zmb3/libtins,zmb3/libtins,hanw/libtins,UlfWetzker/libtins,viveks9/decrypt80211,capturePointer/libtins,UlfWetzker/libtins,capturePointer/libtins,wavelets/libtins,wavelets/libtins,bowlofstew/libtins,mfontanini/libtins,viveks9/decrypt80211,bowlofstew/libtins,rklabs/libtins