Fixed support for latest SpiderMonkey compiled with JS_THREADSAFE
Fixed support for latest SpiderMonkey compiled with JS_THREADSAFE


DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf,DmitrySigaev/gpac-sf