Fixed memory leak


git-svn-id: https://svn.ntop.org/svn/ntop/trunk/nDPI@7163 a02cd0c1-8e76-42e1-a119-56f9641475e2
Fix to diplay host_server_name


git-svn-id: https://svn.ntop.org/svn/ntop/trunk/nDPI@7164 a02cd0c1-8e76-42e1-a119-56f9641475e2
Enlarged buffer


git-svn-id: https://svn.ntop.org/svn/ntop/trunk/nDPI@7165 a02cd0c1-8e76-42e1-a119-56f9641475e2
Automatic conversion to lowercase of host_server_name


git-svn-id: https://svn.ntop.org/svn/ntop/trunk/nDPI@7167 a02cd0c1-8e76-42e1-a119-56f9641475e2