Cleanup for GCC-4.x
diff --git a/net/eth.c b/net/eth.c
index fe1edd1..cfab0e1 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -109,7 +109,7 @@
 
 int eth_initialize(bd_t *bis)
 {
-	unsigned char enetvar[32], env_enetaddr[6];
+	char enetvar[32], env_enetaddr[6];
 	int i, eth_number = 0;
 	char *tmp, *end;