slot: remove relation between reader and slot

The card_detect() can detect removed reader,
it calls card_removed(), but card_detect_all()
did not remove relation between slot and reader.

src/pkcs11/slot.c

@@ -428,6 +428,17 @@ card_detect_all(void)
  }
  }
  card_detect(reader);
+
+ /* If reader was removed, card_removed() was already called in card_detect(),
+ * remove only relation between reader and slot. */
+ if (reader->flags & SC_READER_REMOVED) {
+ for (j = 0; j<list_size(&virtual_slots); j++) {
+ sc_pkcs11_slot_t *slot = (sc_pkcs11_slot_t *) list_get_at(&virtual_slots, j);
+ if (slot->reader == reader) {
+ slot->reader = NULL;
+ }
+ }
+ }
  }
  }
  sc_log(context, "All cards detected");