EA LUCIDE_THUMBNAIL is semi broken

[guest]

The extended attribute LUCIDE_THUMBNAIL is not written correctly. According to "Control Program Guide and Reference" the data must be preceded by a type word (e.g. EAT_BINARY or a user defined one) and should be preceded by a length word (in fact I never saw an EA without the length). See section "Extended Attribute Data Type Conventions". The current structure of the EA will probably break some EA reading functions.

This can be seen with V1.20.