Removed use of gendered pronoun

src/unix/fs.c

@@ -313,7 +313,7 @@ static ssize_t uv__fs_sendfile_emul(uv_fs_t* req) {
   *
   * 1. Read errors are reported only if nsent==0, otherwise we return nsent.
   *    The user needs to know that some data has already been sent, to stop
   *    him from sending it twice.
   *    them from sending it twice.
   *
   * 2. Write errors are always reported. Write errors are bad because they
   *    mean data loss: we've read data but now we can't write it out.

src/unix/stream.c

@@ -668,8 +668,8 @@ static void uv__write_req_finish(uv_write_t* req) {
  /* Only free when there was no error. On error, we touch up write_queue_size
   * right before making the callback. The reason we don't do that right away
   * is that a write_queue_size > 0 is our only way to signal to the user that
   * he should stop writing - which he should if we got an error. Something to
   * revisit in future revisions of the libuv API.
   * they should stop writing - which they should if we got an error. Something
   * to revisit in future revisions of the libuv API.
   */
  if (req->error == 0) {
    if (req->bufs != req->bufsml)