Fixed union member access typo

Closes https://github.com/espressif/esp-idf/pull/9498

components/bt/host/bluedroid/bta/dm/bta_dm_act.c

@@ -2913,7 +2913,7 @@ static UINT8 bta_dm_authorize_cback (BD_ADDR bd_addr, DEV_CLASS dev_class, BD_NA
             sec_event.cfm_req.bd_name[0] = '\0';
         }
 
-        sec_event.key_notif.passkey    = bta_dm_cb.num_val; /* get PIN code numeric number */
+        sec_event.cfm_req.num_val    = bta_dm_cb.num_val; /* get PIN code numeric number */
 
         /* 1 additional event data fields for this event */
         sec_event.cfm_req.just_works = bta_dm_cb.just_works;