Patch from KRONSTORFER Horst to Fix a size mismatch in ping, such as the 56/84

mismatch inthe following example:
  # ping -c 1 172.16.2.1
  PING 172.16.2.1 (172.16.2.1): 56 data bytes
  84 bytes from 172.16.2.1: icmp_seq=0 ttl=64 time=0.2 ms

1 files changed, 2 insertions, 2 deletions

diff --git a/networking/ping.c b/networking/ping.c
index d33cb358f..7fe52ab39 100644
--- a/networking/ping.c
+++ b/networking/ping.c
@@ -108,7 +108,7 @@ static void ping(const char *host)
         pkt->icmp_type = ICMP_ECHO;
         pkt->icmp_cksum = in_cksum((unsigned short *) pkt, sizeof(packet));
 
-        c = sendto(pingsock, packet, sizeof(packet), 0,
+        c = sendto(pingsock, packet, DEFDATALEN + ICMP_MINLEN, 0,
                            (struct sockaddr *) &pingaddr, sizeof(struct sockaddr_in));
 
         if (c < 0 || c != sizeof(packet))
@@ -202,7 +202,7 @@ static void sendping(int junk)
 {
         struct icmp *pkt;
         int i;
-        char packet[datalen + sizeof(struct icmp)];
+        char packet[datalen + ICMP_MINLEN];
 
         pkt = (struct icmp *) packet;