openbsd-compat/port-aix.c fix for 3.7p1

[Albert Chin]

1. Need a prototype for get_canonical_hostname().
2. -I.. is used to build port-aix.c so why not just #include
   <xmalloc.h> rather than <../xmalloc.h>?

-- 
albert chin (china at thewrittenword.com)

-- snip snip
--- openbsd-compat/port-aix.c.orig	Tue Sep 16 10:07:47 2003
+++ openbsd-compat/port-aix.c	Tue Sep 16 10:08:09 2003
@@ -27,11 +27,12 @@
 #include "ssh.h"
 #include "log.h"
 #include "servconf.h"
+#include "canohost.h"
 
 #ifdef _AIX
 
 #include <uinfo.h>
-#include <../xmalloc.h>
+#include <xmalloc.h>
 #include "port-aix.h"
 
 extern ServerOptions options;