seeking resets eof, so the IsEof is always false
after the first loop

Change-Id: I2e533f3f9c494566aabb947c05258a770e883b1f
(cherry picked from commit e2e6fa5a)
Reviewed-on: https://gerrit.libreoffice.org/17273Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>