IOT-1583: Fixing /W3 warnings in /resource directory - part 3.

IOT-1583: Fixing /W3 warnings in /resource directory - part 3.

Fixing all /W3s inside connectivity, routing, security and stack
directories.

Change-Id: I9e99d5f813d6f3f399983759da0b98eeb03c9388
Signed-off-by: Pawel Winogrodzki <pawelwi@microsoft.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/19559
Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: Phil Coval <philippe.coval@osg.samsung.com>
Reviewed-by: Alex Kelley <alexke@microsoft.com>
Reviewed-by: Mike Fenelon <mike.fenelon@microsoft.com>