Merge "Properly clear pfds in btif_sock_thread"

#include <time.h>

#include <unistd.h>

#include <array>

#include <mutex>

#include <optional>

#include <string>

  int ps_i = 0;

  int pfd_i = 0;

  asrt(ts[h].poll_count <= MAX_POLL);

  memset(pfds, 0, sizeof(pfds[0]) * ts[h].poll_count);

  while (count < ts[h].poll_count) {

    if (ps_i >= MAX_POLL) {

      APPL_TRACE_ERROR(

  }

}

static void* sock_poll_thread(void* arg) {

  struct pollfd pfds[MAX_POLL];

  memset(pfds, 0, sizeof(pfds));

  std::array<struct pollfd, MAX_POLL> pfds;

  int h = (intptr_t)arg;

  for (;;) {

    prepare_poll_fds(h, pfds);

    pfds = {};

    prepare_poll_fds(h, pfds.data());

    int ret;

    OSI_NO_INTR(ret = poll(pfds, ts[h].poll_count, -1));

    OSI_NO_INTR(ret = poll(pfds.data(), ts[h].poll_count, -1));

    if (ret == -1) {

      APPL_TRACE_ERROR("poll ret -1, exit the thread, errno:%d, err:%s", errno,

                       strerror(errno));

        else

          ret--;  // exclude the cmd fd

      }

      if (need_process_data_fd) process_data_sock(h, pfds, pfds_count, ret);

      if (need_process_data_fd)

        process_data_sock(h, pfds.data(), pfds_count, ret);

    } else {

      LOG_INFO("no data, select ret: %d", ret);

    };