ghalliday/HPCC-Platform — comment on commit d056450f91550587c014764e798999aee8fb826b
File: roxie/roxiemem/roxiemem.cpp line 1891
By richardkchapman:

(though it makes no difference if the header size is aligned on same power. But if you upped aligment to 8 but header size was 4 it might be significant).