V560 A part of conditional expression is always false: current == cDecimalSep.

Assuming a copypaste error in commit 21052ba2.
Compare to a similar case below (line 817).

Change-Id: Iebd84aa8df3e37b9a5e4fdc7ce7a25a0704a260f
Reviewed-on: https://gerrit.libreoffice.org/63269
Tested-by: Jenkins
Reviewed-by: Eike Rathke <erack@redhat.com>