Fix for coverity issues

:Release Notes:
Fix for coverity issues

:Detailed Notes:
One PmLogDebug() is using j_cstr_to_buffer() as a character pointer.
It'll return raw_buffer structure.

:Testing Performed:
Compiled locally and tested on a device.

:QA Notes:

:Issues Addressed:
[ANG-315] Coverity issues: pmlogdaemon

Open-webOS-DCO-1.0-Signed-off-by: Hongjeon Ha <hj.ha@lge.com>

Change-Id: I3810e82b41a94e2525b1502e40f04368d90dd367
Reviewed-on: https://g2g.palm.com/4197
Reviewed-by: DCO Verification
Reviewed-by: Gayathri Srinivasan <gayathri.srinivasan@lge.com>
Tested-by: Gayathri Srinivasan <gayathri.srinivasan@lge.com>