AP: Use more readable version of management group cipher in error cases

This makes it easier to interpret AP side debug log for a case where a
station specifies in unsupported management group cipher.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/common/wpa_common.c

@@ -689,9 +689,10 @@ int wpa_parse_wpa_ie_rsn(const u8 *rsn_ie, size_t rsn_ie_len,
 	if (left >= 4) {
 		data->mgmt_group_cipher = rsn_selector_to_bitfield(pos);
 		if (!wpa_cipher_valid_mgmt_group(data->mgmt_group_cipher)) {
-			wpa_printf(MSG_DEBUG, "%s: Unsupported management "
-				   "group cipher 0x%x", __func__,
-				   data->mgmt_group_cipher);
+			wpa_printf(MSG_DEBUG,
+				   "%s: Unsupported management group cipher 0x%x (%08x)",
+				   __func__, data->mgmt_group_cipher,
+				   WPA_GET_BE32(pos));
 			return -10;
 		}
 		pos += RSN_SELECTOR_LEN;