Fix compile warning in net/eth.c

Signed-off-by: Remy Bohmer <linux@bohmer.net>
diff --git a/net/eth.c b/net/eth.c
index cec0387..3a7ff50 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -453,7 +453,7 @@
 void eth_try_another(int first_restart)
 {
 	static struct eth_device *first_failed = NULL;
-	char *ethrotate, *act;
+	char *ethrotate;
 
 	/*
 	 * Do not rotate between network interfaces when