Should "CRC" be in uppercase?

A new function check_control_file() in pg_combinebackup.c has the
following message.

>            pg_fatal("%s: crc is incorrect", controlpath);

I think "crc" should be in all uppercase in general and a brief
grep'ing told me that it is almost always or consistently used in
uppercase in our tree.

regards.

-- 
Kyotaro Horiguchi
NTT Open Source Software Center