Merge "Fix memory leak in MtpFfsHandle." into main

#include <dirent.h>

#include <errno.h>

#include <fcntl.h>

#include <memory>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

void MtpFfsHandle::close() {

    // Join all child threads before destruction

    for (auto& thread : mChildThreads) {

        thread.join();

    int count = mChildThreads.size();

    for (int i = 0; i < count; i++) {

        mChildThreads[i].join();

        delete &mChildThreads[i];

    }

    mChildThreads.clear();

    io_destroy(mCtx);

    closeEndpoints();