Check for invalid number of data words in Pixel ROB fragments.
requested to merge goetz/athena:ATLASRECTS-6624_master_handle_fragments_with_invalid_ndata into master
Under certain circumstance the number of rod data words is reported incorrectly for some ROB fragments. Such fragments have a suspiciously large number of rod data words and do not pass the ROD fragment validation. They do not contain any data. These fragments are now rejected and treated as TruncatedROB errors.
Fixes segmentation fault discussed in ATLASRECTS-6624