XMPDataSource: ignore bad compressor or encryptor correctly
XMPDataSource: ignore bad compressor or encryptor correctly
apavlenko/vmf,01org/vmf,01org/vmf,apavlenko/vmf,01org/vmf,01org/vmf,01org/vmf,apavlenko/vmf,apavlenko/vmf,apavlenko/vmf