Include arpa/nameser.h before resolv.h.

diff --git a/dlls/iphlpapi/iphlpapi_main.c b/dlls/iphlpapi/iphlpapi_main.c
index 76b1390..829ec76 100644
--- a/dlls/iphlpapi/iphlpapi_main.c
+++ b/dlls/iphlpapi/iphlpapi_main.c
@@ -22,7 +22,12 @@
 
 #include <stdlib.h>
 #include <sys/types.h>
+#ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_NAMESER_H
+#include <arpa/nameser.h>
+#endif
 #include <resolv.h>
 #include "winbase.h"
 #include "iphlpapi.h"