Left-aligned currency symbols were put in preceding cells
sometimes, because fill width was calculated incorrectly.

Commit 37210da0 fixed the issue
for LOK, but the bug was still reproducible in Calc if setting
"Use printer metrics for text formatting" was enabled.

Change-Id: I6cf90493cbf98c5020acd5faf1d0f3cf2def5c25
Reviewed-on: https://gerrit.libreoffice.org/56172
Tested-by: Jenkins
Reviewed-by: Jan Holesovsky <kendy@collabora.com>