[TCP] htcp: Better packing of struct htcp.

Based upon a patch by Joe Perches.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/tcp_htcp.c

@@ -26,12 +26,12 @@ struct htcp {
 	u32	alpha;		/* Fixed point arith, << 7 */
 	u8	beta;           /* Fixed point arith, << 7 */
 	u8	modeswitch;     /* Delay modeswitch until we had at least one congestion event */
-	u32	last_cong;	/* Time since last congestion event end */
-	u32	undo_last_cong;
 	u16	pkts_acked;
 	u32	packetcount;
 	u32	minRTT;
 	u32	maxRTT;
+	u32	last_cong;	/* Time since last congestion event end */
+	u32	undo_last_cong;
 
 	u32	undo_maxRTT;
 	u32	undo_old_maxB;