Bug 9246: Koha installer crash with mysql error

Bug 9246: Koha installer crash with mysql error

The Koha installer reports "Error 1166 at line 1871: Incorrect column
name 'closed'." Reason: line 1923 in kohastructure.sql had whitespace
between back tick on Column name "closed".

Patch removes white space on given line.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Elliott Davis <elliott@test.bywatersolutions.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>