From scottr@netbsd.org: Several minor changes:
From scottr@netbsd.org:
Several minor changes:

 - Indent some comments appropriately per KNF.
 - Output all diagnostics using the device name rather than a static string.
 - Fix a (mostly marmless) bug in snintr(), where loss of heartbeat wasn't
   properly ignored and could mask the `receive descriptors exhausted'
   diagnostic.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars