VirtualSystemManagementService: Fixing potential null dereferences
VirtualSystemManagementService: Fixing potential null dereferences

As reported in https://bugzilla.redhat.com/show_bug.cgi?id=728245

line 1048 - Comparing "path" to null implies that "path" might be null.
line 1057 - Dereferencing null variable "path".
line 1088 - Comparing "port" to null implies that "port" might be null.
line 1094 - Dereferencing null variable "port".

Changes since #1
 - Removed free calls, incorporated at revision 1130.
 - Avoid NULL dereference in parse_sdl_address as well.

Signed-off-by: Eduardo Lima (Etrunko) <62d34c03f1c79cee129ea3245d580303ab09f27f@br.ibm.com>

libvirt/libvirt-cim,libvirt/libvirt-cim,libvirt/libvirt-cim