[PATCH] pktgen: remove useless assignment

From: Alexey Dobriyan <adobriyan@gmail.com>

On main codepath pkt_dev is immediately rewritten. On error codepath it isn't
used.

Noticed by Coverity checker.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Index: linux-kj/net/core/pktgen.c
===================================================================
--- linux-kj.orig/net/core/pktgen.c	2005-10-01 02:55:26.000000000 +0400
+++ linux-kj/net/core/pktgen.c	2005-10-01 03:00:34.000000000 +0400
@@ -2868,7 +2868,7 @@ static int pktgen_add_device(struct pktg
 	
 	/* We don't allow a device to be on several threads */
 
-	if( (pkt_dev = __pktgen_NN_threads(ifname, FIND)) == NULL) {
+	if(__pktgen_NN_threads(ifname, FIND) == NULL) {
 						   
 		pkt_dev = kmalloc(sizeof(struct pktgen_dev), GFP_KERNEL);
                 if (!pkt_dev)