[PATCH] ixgb: remove unused variable

[Auke Kok <auke-jan.h.kok@intel.com>]

From: Julia Lawall <julia@diku.dk>

The variable num_group_tail_writes is initialized but never used otherwise.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T;
identifier i;
constant C;
@@

(
extern T i;
|
- T i;
  <+... when != i
- i = C;
  ...+>
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
---

 drivers/net/ixgb/ixgb_main.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index 9c9bf31..c68b182 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -2092,14 +2092,12 @@ ixgb_alloc_rx_buffers(struct ixgb_adapter *adapter)
 	struct ixgb_buffer *buffer_info;
 	struct sk_buff *skb;
 	unsigned int i;
-	int num_group_tail_writes;
 	long cleancount;
 
 	i = rx_ring->next_to_use;
 	buffer_info = &rx_ring->buffer_info[i];
 	cleancount = IXGB_DESC_UNUSED(rx_ring);
 
-	num_group_tail_writes = IXGB_RX_BUFFER_WRITE;
 
 	/* leave three descriptors unused */
 	while(--cleancount > 2) {


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