Fix segfault while retrieving manager properties

Open-webOS-DCO-1.0-Signed-off-by: Sapna Todwal <sapna.todwal@lge.com>

Change-Id: I322a4057c131f6c8b44152ef3340a89ebf656d4b
Reviewed-on: https://g2g.palm.com/1782
Reviewed-by: Build Verification
Reviewed-by: Ed Chejlava <ed.chejlava@lge.com>
Tested-by: Sapna Todwal <sapna.todwal@lge.com>
Reviewed-by: Keith Derrick <keith.derrick@lge.com>
Reviewed-by: Sapna Todwal <sapna.todwal@lge.com>