Create collation incorrect error code

Strangeness:

template1=# create collation "nb_NO.utf8" (locale=nb_NO.utf8);
ERROR: could not create locale "nb_no.utf8": Success

Clearly it's not successful...

On some runs, I get:

template1=# create collation "nb_NO.utf8" (locale=nb_NO.utf8);
ERROR: could not create locale "nb_no.utf8": No such file or directory
DETAIL: The operating system could not find any locale data for the
locale name "nb_no.utf8".

Which is correct.

The first one is clearly wrong. Seems there are some cases where errno
isn't set properly? But form what I can tell
(http://pubs.opengroup.org/onlinepubs/9699919799/functions/newlocale.html)
errno should be set.

--
 Magnus Hagander
 Me: http://www.hagander.net/
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