demux: mp4: check stsc/stsz total samples consistency (fix #17589)
demux: mp4: check stsc/stsz total samples consistency (fix #17589)

Otherwise can trigger a chunks read overflow

xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc,xkfz007/vlc