chg: adjust timeouts in ssiClose()
(cherry picked from commit be2fdf57a6b3208d836335e6863aaa10834d6629)

Signed-off-by: Andreas Steenpass <steenpass@mathematik.uni-kl.de>
Merge pull request #427 from steenpass/sigkill_sw

chg: adjust timeouts in ssiClose()