usb-redir: Not finding an async urb id is not an error

We clear our pending async urb list on device disconnect and we may still
receive "packet complete" packets from our peer after this, which will then
refer to packet ids no longer in our list.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

hw/usb/redirect.c

@@ -277,7 +277,7 @@ static AsyncURB *async_find(USBRedirDevice *dev, uint32_t packet_id)
             return aurb;
         }
     }
-    ERROR("could not find async urb for packet_id %u\n", packet_id);
+    DPRINTF("could not find async urb for packet_id %u\n", packet_id);
     return NULL;
 }