net-snmp: fiexed improper handling of empty username when requesting session table

Signed-off-by: NDmitry Kozlov <xeb@mail.ru>

accel-pppd/extra/net-snmp/sessionTable_data_access.c

@@ -224,16 +224,16 @@ sessionTable_container_load(netsnmp_container *container)
 				strcpy(rowreq_ctx->data->ifname, ses->ifname);
 
 				if (ses->username)
-					rowreq_ctx->data->username = strdup(ses->username);
+					rowreq_ctx->data->username = _strdup(ses->username);
 				else
-					ses->username = strdup("");
+					rowreq_ctx->data->username = _strdup("");
 
 				rowreq_ctx->data->peer_addr = ses->ipv4 ? ses->ipv4->peer_addr : 0;
 				rowreq_ctx->data->type = ses->ctrl->type;
 				rowreq_ctx->data->state = ses->state;
 				rowreq_ctx->data->uptime = (ses->stop_time ? ses->stop_time : t) - ses->start_time;
-				rowreq_ctx->data->calling_sid = strdup(ses->ctrl->calling_station_id);
-				rowreq_ctx->data->called_sid = strdup(ses->ctrl->called_station_id);
+				rowreq_ctx->data->calling_sid = _strdup(ses->ctrl->calling_station_id);
+				rowreq_ctx->data->called_sid = _strdup(ses->ctrl->called_station_id);
 
         CONTAINER_INSERT(container, rowreq_ctx);
         ++count;

accel-pppd/extra/net-snmp/sessionTable_data_get.c

@@ -73,13 +73,13 @@ sessionTable_release_data(sessionTable_data *data)
     DEBUGMSGTL(("verbose:sessionTable:sessionTable_release_data","called\n"));
 
 		if (data->username)
-			free(data->username);
+			_free(data->username);
 
 		if (data->calling_sid)
-			free(data->calling_sid);
+			_free(data->calling_sid);
 
 		if (data->called_sid)
-			free(data->called_sid);
+			_free(data->called_sid);
 
     free(data);
 } /* sessionTable_release_data */