the actual change escaped the last patch

Reference: /n/atom/patch/applied/usbethernbuf2
Date: Thu Apr 24 19:04:00 CES 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/cmd/usb/ether/ether.c	Thu Apr 24 19:03:56 2014
+++ /sys/src/cmd/usb/ether/ether.c	Thu Apr 24 19:03:58 2014
@@ -1227,8 +1227,8 @@
 	e->fs.dev = dev;
 	e->fs.aux = e;
 	e->bc = chancreate(sizeof(Buf*), Nbufs);
-	e->rc = chancreate(sizeof(Buf*), Nconns/2);
-	e->wc = chancreate(sizeof(Buf*), Nconns*2);
+	e->rc = chancreate(sizeof(Buf*), Nbuffer);
+	e->wc = chancreate(sizeof(Buf*), Nbuffer);
 	incref(e->dev);
 	proccreate(etherwriteproc, e, 16*1024);
 	incref(e->dev);