Robert,

> I'm not quite sure how to get developer's rights on sourceforge,
> otherwise I'd just fix it myself.

You submit few patches that are accepted by somebody with write
access, and then you get RW access.

> Apparently, FBBlobField is allocating an unnecessary object for
> the garbage collector to deal with.

You're right. It's left from the times when checking for null was done
other way. Hope somebody will apply your patch (I will try to do this
if I have time).

Roman