Fix crash on startup

LauncherObject class had a couple of uninitialized pointer member
variables which caused sysmgr to crash on startup sometimes.

Open-webOS-DCO-1.0-Signed-off-by: Teppo Pennanen <teppo.pennanen@palm.com>

Change-Id: I3dbe1c7490fc49fec7b1458f1146512473cd6f1d