[HUB] Prevent status request to invalid ep_num

[Ryzee119]

Describe the PR
If you disconnect a USB hub tusb clears the hub device memory (to zeros). If its a hub, during disconnect it also creates a detach event on hub port 0 to unroll the loop. Problem occurs when it processes this detach event on the now cleared hub device and requests the next hub status packet

tinyusb/src/host/usbh.c

Line 461 in ae364b1

(void) hub_edpt_status_xfer( event.connection.hub_addr );

Resulting in this request onto the hub interrupt endpoint
Queue EP 00 with 1 bytes ...

The ep_num of 0 causes some backends to process it as a control transfer instead of a interrupt transfer This was resulting in a td leak on the OHCI backend.

This PR prevents this from occuring.
As USB hub ports start from 1, this should not cause any issues under normal operation.

[hathach]

perfect, thank you for the fix