Patch to remove 'Connection timed out' messages with SCM3711

I am using an SCM3711 on ubuntu 11.10.

While my script is waiting for a device to come into range, it continuously prints
   Connection timed out
   Connection timed out
   Connection timed out
   ...
I have traced this down to pn53x_usb.py where I have added a third test.

=== modified file 'nfc/dev/pn53x_usb.py'
--- nfc/dev/pn53x_usb.py 2011-09-27 17:31:57 +0000
+++ nfc/dev/pn53x_usb.py 2012-01-30 09:35:07 +0000
@@ -67,7 +67,8 @@
             try: frame = self.dh.bulkRead(self.usb_inp, 300, timeout)
             except usb.USBError as error:
                 if (error.args[0] == "No error" or
- error.args[0] == "usb_reap: timeout error"):
+ error.args[0] == "usb_reap: timeout error" or
+ error.args[0] == "Connection timed out"):
                     # normal timeout condition on Linux (1) and Windows (2)
                     return None
                 usb_err = "could not set config 1: Device or resource busy"

I hope this helps someone
/Hartmut