Fix few more mem leaks

:Release Notes:
Fix some minor mem leaks.

:Detailed Notes:
Fix some minor mem leaks in cases where the jvalue_ref array object is
initialized but no suitable entry is found to populate it.

:Testing Performed:
Verified that the WCA binary with this fix is stable.

:Issues Addressed:
[GF-7993] webos-conman-adapter memory consumption keeps going up when TV
          is idle

Open-webOS-DCO-1.0-Signed-off-by: Simon Busch <simon.busch@lge.com>

Change-Id: I945b34f73d2a48bb80f24bcf19f855d95f4b2592
Reviewed-on: https://g2g.palm.com/3681
Reviewed-by: Sapna Todwal <sapna.todwal@lge.com>
Tested-by: Sapna Todwal <sapna.todwal@lge.com>