Reset EP flags on close.

src/device/usbd.c

@@ -1379,7 +1379,13 @@ void usbd_edpt_close(uint8_t rhport, uint8_t ep_addr)
   TU_ASSERT(dcd_edpt_close, /**/);
   TU_LOG2("  CLOSING Endpoint: 0x%02X\r\n", ep_addr);
 
+  uint8_t const epnum = tu_edpt_number(ep_addr);
+  uint8_t const dir   = tu_edpt_dir(ep_addr);
+
   dcd_edpt_close(rhport, ep_addr);
+  _usbd_dev.ep_status[epnum][dir].stalled = false;
+  _usbd_dev.ep_status[epnum][dir].busy = false;
+  _usbd_dev.ep_status[epnum][dir].claimed = false;
 
   return;
 }