[IPV4]: Apply sysctl_icmp_echo_ignore_broadcasts to ICMP_TIMESTAMP as well.

This was the full intention of the original code.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index cb75948..279f57a 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -970,7 +970,8 @@
 		 *	RFC 1122: 3.2.2.8 An ICMP_TIMESTAMP MAY be silently
 		 *	  discarded if to broadcast/multicast.
 		 */
-		if (icmph->type == ICMP_ECHO &&
+		if ((icmph->type == ICMP_ECHO ||
+		     icmph->type == ICMP_TIMESTAMP) &&
 		    sysctl_icmp_echo_ignore_broadcasts) {
 			goto error;
 		}