initdb ignores invalid locale names

When initdb is given an invalid (possibly mistyped) locale name, it just 
prints a warning and proceeds with the default locale from the 
environment.  Someone already wondered about this before:
   /* should we exit here? */   if (!ret)       fprintf(stderr, _("%s: invalid locale name \"%s\"\n"), progname,
      locale);
 
   return ret;

I obviously think we should.  Why shouldn't we?

-- 
Peter Eisentraut
http://developer.postgresql.org/~petere/