message: fix tests on Alpine
diff: @@ -837,7 +837,7 @@ static php_stream *php_plain_files_dir_opener(php_stream_wrapper *wrapper, const
  static php_stream *stream_fopen_rel(const char *filename, const char *mode, zend_string **opened_path, int options STREAMS_DC)
  {
  - char realpath[MAXPATHLEN];
  + char _realpath[MAXPATHLEN];
  int open_flags;
  int fd;
  php_stream *ret;
  @@ -855,11 +855,11 @@ static php_stream *stream_fopen_rel(const char *filename, const char *mode, zend
  if (options & STREAM_ASSUME_REALPATH)
  {
  - strlcpy(realpath, filename, sizeof(realpath));
  + strlcpy(_realpath, filename, sizeof(_realpath));
  }
  else
  {
  - if (expand_filepath(filename, realpath) == NULL)
  + if (expand_filepath(filename, _realpath) == NULL)
  {
  return NULL;
  }
  @@ -867,14 +867,14 @@ static php_stream *stream_fopen_rel(const char *filename, const char *mode, zend
  if (persistent)
  {
  - spprintf(&persistent_id, 0, "streams_stdio_%d_%s", open_flags, realpath);
  + spprintf(&persistent_id, 0, "streams_stdio_%d_%s", open_flags, _realpath);
  switch (php_stream_from_persistent_id(persistent_id, &ret))
  {
  case PHP_STREAM_PERSISTENT_SUCCESS:
  if (opened_path)
  {
  //TODO: avoid reallocation???
  - *opened_path = zend_string_init(realpath, strlen(realpath), 0);
  + *opened_path = zend_string_init(_realpath, strlen(_realpath), 0);
  }
  /* fall through */
  @@ -884,9 +884,9 @@ static php_stream *stream_fopen_rel(const char *filename, const char *mode, zend
  }
  }
  #ifdef PHP_WIN32
  - fd = php_win32_ioutil_open(realpath, open_flags, 0666);
  + fd = php_win32_ioutil_open(_realpath, open_flags, 0666);
  #else
  - fd = open(realpath, open_flags, 0666);
  + fd = open(_realpath, open_flags, 0666);
  #endif
  if (fd != -1)
  {
  @@ -895,7 +895,7 @@ static php_stream *stream_fopen_rel(const char *filename, const char *mode, zend
  {
  if (opened_path)
  {
  - *opened_path = zend_string_init(realpath, strlen(realpath), 0);
  + *opened_path = zend_string_init(_realpath, strlen(_realpath), 0);
  }
  if (persistent_id)
  {
  