Upgrade to tcpdump 4.7.4.

Bug: http://b/24902618
Change-Id: I7c3605015d90453b0a8c339b1774e285796f8775
diff --git a/ether.h b/ether.h
index e8b3a71..58b92de 100644
--- a/ether.h
+++ b/ether.h
@@ -1,4 +1,3 @@
-/* @(#) $Header: /tcpdump/master/tcpdump/ether.h,v 1.8 2002-12-11 07:13:51 guy Exp $ (LBL) */
 /*
  * Copyright (c) 1982, 1986, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -45,9 +44,9 @@
  * Structure of a DEC/Intel/Xerox or 802.3 Ethernet header.
  */
 struct	ether_header {
-	u_int8_t	ether_dhost[ETHER_ADDR_LEN];
-	u_int8_t	ether_shost[ETHER_ADDR_LEN];
-	u_int16_t	ether_type;
+	uint8_t		ether_dhost[ETHER_ADDR_LEN];
+	uint8_t		ether_shost[ETHER_ADDR_LEN];
+	uint16_t	ether_type;
 };
 
 /*