Fix duration cast on FileWatch (#2804)
Fix duration cast on FileWatch (#2804)

Signed-off-by: Miguel Company <397e72ca524b8ec9f06ef35fe0c74285a78d6afb@eprosima.com>
eProsima/Fast-DDS,eProsima/Fast-DDS,eProsima/Fast-DDS,eProsima/Fast-DDS,eProsima/Fast-DDS