fix Coverity issues

:Release Notes:
Fix Coverity issues

:Detailed Notes:
Fix unchecked return values: 10895-10899, 44080
Fix Unsigned compare against 0: 17729
Fix Unintialized scalar field: 38173-38174

:Testing Performed:
Built image, tested that normal configurator functionality works

:QA Notes:

:Issues Addressed:
[GF-53844] Fix coverity issues in configurator

Open-webOS-DCO-1.0-Signed-off-by: Eric Blade <eric.blade@lge.com>

Change-Id: Iba1838b0cd6778550a233293f91fdfde4496ebe4
Reviewed-on: https://g2g.palm.com/4465
Reviewed-by: DCO Verification
Reviewed-by: Eric Blade <eric.blade@lge.com>
Tested-by: Eric Blade <eric.blade@lge.com>
Reviewed-by: Maksym Sditanov <maxim.sditanov@lge.com>