core/fs/pxe/pxe.c: remove variables set but not used

gcc 4.6 warns on variables set but not used, so remove them.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/core/fs/pxe/pxe.c b/core/fs/pxe/pxe.c
index a1e4097..aef2e7e 100644 (file)
--- a/core/fs/pxe/pxe.c
+++ b/core/fs/pxe/pxe.c
@@ -332,6 +332,7 @@ static void ack_packet(struct inode *inode, uint16_t ack_num)
     udp_write.buffer_size = 4;
 
     err = pxe_call(PXENV_UDP_WRITE, &udp_write);
+    (void)err;
 #if 0
     printf("sent %s\n", err ? "FAILED" : "OK");
 #endif