pg_controldata/pg_resetxlog "Latest checkpoint's NextXID" format

I wonder why "Latest checkpoint's NextXID" is formated like this:

8<-------------------------printf(_("Latest checkpoint's NextXID:          %u/%u\n"),
ControlFile.checkPointCopy.nextXidEpoch,      ControlFile.checkPointCopy.nextXid); 
8<-------------------------

Shouldn't it use "%X/%X", same as e.g. "Prior checkpoint location" and
all the other XIDs?

Joe

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