Fix building of icmp_main.c

Modified: trunk/reactos/lib/icmp/icmp_main.c

--- trunk/reactos/lib/icmp/icmp_main.c	2006-01-09 16:01:46 UTC (rev 20753)
+++ trunk/reactos/lib/icmp/icmp_main.c	2006-01-09 16:14:35 UTC (rev 20754)
@@ -66,6 +66,7 @@

 #include "winbase.h"
 #include "winerror.h"
 #include "ipexport.h"

+#include <ws2tcpip.h>

 #include "icmpapi.h"
 #include "wine/debug.h"