nPos has already been computed the 3 lines above. No need to recompute it.

Change-Id: Iad739d6fffd2c40cc633789edfe88d13e87dd28b
Signed-off-by: jailletc36 <christophe.jaillet@wanadoo.fr>
Reviewed-on: https://gerrit.libreoffice.org/2015Reviewed-by: Tomáš Chvátal <tchvatal@suse.cz>
Tested-by: Tomáš Chvátal <tchvatal@suse.cz>
Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>