include/json.hpp: add a trick to avoid a gcc warning
include/json.hpp: add a trick to avoid a gcc warning

versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,ibc/MediaSoup,versatica/mediasoup,ibc/MediaSoup,ibc/MediaSoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup