webos-image: webos-connman-adapter=7

4ad0436 Fix compilation warnings
ef2f570 Fix segfault while retrieving manager properties

Fixes:
[GF-2463] Cleanup all warnings in webos-connman-adapter
CCC:
[GF-3557] webos-image: webos-connman-adapter=7

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

Change-Id: I17580f1311b76c092f754f05af1fd7d39f5f7290
Reviewed-on: https://g2g.palm.com/1909
Reviewed-by: Susan Montooth <susan.montooth@lge.com>
Tested-by: Susan Montooth <susan.montooth@lge.com>