dvbinfo: fix crash in DumpContentDescriptor
dvbinfo: fix crash in DumpContentDescriptor

vlc-mirror/libdvbpsi,mwgoldsmith/dvbpsi,paraeco/libdvbpsi,paraeco/libdvbpsi,mwgoldsmith/dvbpsi,garbear/libdvbpsi,UIKit0/libdvbpsi,garbear/libdvbpsi,vlc-mirror/libdvbpsi,mkrufky/libdvbpsi,mkrufky/libdvbpsi,paraeco/libdvbpsi,paraeco/libdvbpsi,UIKit0/libdvbpsi,vlc-mirror/libdvbpsi,mkrufky/libdvbpsi,mwgoldsmith/dvbpsi,garbear/libdvbpsi,mwgoldsmith/dvbpsi,UIKit0/libdvbpsi