Bugzilla bug #20770: CopyHostent should handle the possibility that h_aliases is null.  In that case, we allocate in our copy a one-element array whose only element is a null pointer.
Bugzilla bug #20770: CopyHostent should handle the possibility that
h_aliases is null.  In that case, we allocate in our copy a one-element
array whose only element is a null pointer.

thespooler/nspr,thespooler/nspr,thespooler/nspr,thespooler/nspr,thespooler/nspr