Fixed a large amount of memory leaks/ Null pointer dereferences

Fixed a large amount of memory leaks/ Null pointer dereferences

This fix goes through nearly 200 issues discovered by Klocwork
and fixes a variety of null pointer dereferences and memory leaks.

Change-Id: Ic6c741872b5fb5a9e432636552dab815c4f1f96c
Signed-off-by: Erich Keane <erich.keane@intel.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/1979
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Ossama Othman <ossama.othman@intel.com>
Reviewed-by: Jon A. Cruz <jonc@osg.samsung.com>