Merge pull request #29 from ia0/fix

Fix enumeration on windows

Author: BartMassey

src/lib.rs

@@ -1,6 +1,7 @@
 //! USB peripheral driver for nRF microcontrollers.
 
 #![no_std]
+#![allow(mismatched_lifetime_syntaxes)] // TODO: Remove in follow-up PR.
 
 mod errata;
 mod pac;

src/usbd.rs

@@ -650,6 +650,7 @@ impl<T: UsbPeripheral> UsbBus for Usbd<T> {
                         // reset the state
                         state.in_transfer_state = TransferState::NoTransfer;
                         ep0_state.set(state);
+                        busy_in_endpoints.update(|x| x & !1);
                     }
                 }
             }