Previously textual value like "10,5 pt" was converted to int as simply
10 (multiplied by 10, it became 100), which compared as different from
unchanged value of 105. This made the fractional values to be treated
as always changed.

This patch uses the same code to convert saved value as is used for
current edit box value.

Change-Id: I09a84a6bf33b17e0192b79b31af21ef14d7e9c63
Reviewed-on: https://gerrit.libreoffice.org/50066Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>