Upgrade to tcpdump 4.7.4.

Bug: http://b/24902618
Change-Id: I7c3605015d90453b0a8c339b1774e285796f8775
diff --git a/rpc_auth.h b/rpc_auth.h
index fe9a40b..3cc9b30 100644
--- a/rpc_auth.h
+++ b/rpc_auth.h
@@ -1,4 +1,3 @@
-/* @(#) $Header: /tcpdump/master/tcpdump/rpc_auth.h,v 1.2 2005-04-27 21:43:48 guy Exp $ (LBL) */
 /*
  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  * unrestricted use provided that this legend is included on all tape
@@ -66,8 +65,8 @@
  * Authentication info.  Opaque to client.
  */
 struct sunrpc_opaque_auth {
-	u_int32_t oa_flavor;		/* flavor of auth */
-	u_int32_t oa_len;		/* length of opaque body */
+	uint32_t oa_flavor;		/* flavor of auth */
+	uint32_t oa_len;		/* length of opaque body */
 	/* zero or more bytes of body */
 };