NetworkTools: fixed 6 of 8 memory leaks

git-svn-id: http://svn.code.sf.net/p/processhacker/code/2.x/trunk@5554 21ef857c-d57f-4fe0-8362-d861dc6d29cd
NetworkTools: fixed access violation

git-svn-id: http://svn.code.sf.net/p/processhacker/code/2.x/trunk@5555 21ef857c-d57f-4fe0-8362-d861dc6d29cd