net/vmxnet3: Fix incorrect debug message

From: Dana Rubin <dana.rubin@ravellosystems.com>

In commit 80da311d,
   "net/vmxnet3: Fix RX TCP/UDP checksum on partially summed packets"
a debug message was introduced in vmxnet3_rx_need_csum_calculate() for
an unlikely input condition.

The message accidentally printed 'len' variable instead of 'pkt_len'.
Fix, providing the correct argument.
Signed-off-by: NDana Rubin <dana.rubin@ravellosystems.com>
Signed-off-by: NShmulik Ladkani <shmulik.ladkani@ravellosystems.com>
Message-id: 1438109090-18957-1-git-send-email-shmulik.ladkani@ravellosystems.com
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

hw/net/vmxnet3.c

@@ -927,9 +927,9 @@ static void vmxnet3_rx_need_csum_calculate(struct VmxnetRxPkt *pkt,
 
     /* Validate packet len: csum_start + scum_offset + length of csum field */
     if (pkt_len < (vhdr->csum_start + vhdr->csum_offset + 2)) {
-        VMW_PKPRN("packet len:%d < csum_start(%d) + csum_offset(%d) + 2, "
+        VMW_PKPRN("packet len:%lu < csum_start(%d) + csum_offset(%d) + 2, "
                   "cannot calculate checksum",
-                  len, vhdr->csum_start, vhdr->csum_offset);
+                  pkt_len, vhdr->csum_start, vhdr->csum_offset);
         return;
     }