LZ4IO_decodeLegacyStream() doesn't need mutable prefs
LZ4IO_decodeLegacyStream() doesn't need mutable prefs

unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso,unknownbrackets/maxcso