MBO-STA: Initiate BTM query with neighbor report IE

Set neighbor report candidate list using sta_set_rfeature
command. The candidate list is buffered and added to the BTM
query frame when initiated. The list is cleared once BTM query
frame is initiated or in sta_reset_default command.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
diff --git a/sigma_dut.c b/sigma_dut.c
index 5401f4e..ee8d1e5 100644
--- a/sigma_dut.c
+++ b/sigma_dut.c
@@ -1051,6 +1051,8 @@
 #endif /* MIRACAST */
 	free(sigma_dut.non_pref_ch_list);
 	sigma_dut.non_pref_ch_list = NULL;
+	free(sigma_dut.btm_query_cand_list);
+	sigma_dut.btm_query_cand_list = NULL;
 	sigma_dut_unreg_cmds(&sigma_dut);
 
 	return 0;