hostapd: Clear location configuration when it is reset

In case that LCI or location civic configuration is cleared,
free the buffer holding the corresponding information to avoid
cases that the information is considered as valid/useful.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>

hostapd/config_file.c

@@ -3493,9 +3493,17 @@ static int hostapd_config_fill(struct hostapd_config *conf,
 	} else if (os_strcmp(buf, "lci") == 0) {
 		wpabuf_free(conf->lci);
 		conf->lci = wpabuf_parse_bin(pos);
+		if (conf->lci && wpabuf_len(conf->lci) == 0) {
+			wpabuf_free(conf->lci);
+			conf->lci = NULL;
+		}
 	} else if (os_strcmp(buf, "civic") == 0) {
 		wpabuf_free(conf->civic);
 		conf->civic = wpabuf_parse_bin(pos);
+		if (conf->civic && wpabuf_len(conf->civic) == 0) {
+			wpabuf_free(conf->civic);
+			conf->civic = NULL;
+		}
 	} else if (os_strcmp(buf, "rrm_neighbor_report") == 0) {
 		if (atoi(pos))
 			bss->radio_measurements[0] |=