Merge "Fix crash in check_elf_file.py"

    # Chech whether all DT_NEEDED entries are specified.

    for lib in self._file_under_test.dt_needed:

      if lib not in specified_sonames:

        self._error('DT_NEEDED "{}" is not specified in shared_libs.'

                    .format(lib.decode('utf-8')))

        self._error(f'DT_NEEDED "{lib}" is not specified in shared_libs.')

        missing_shared_libs = True

    if missing_shared_libs:

    if missing_symbols:

      for sym, ver in sorted(missing_symbols):

        sym = sym.decode('utf-8')

        if ver:

          sym += '@' + ver.decode('utf-8')

        self._error('Unresolved symbol: {}'.format(sym))

          sym += '@' + ver

        self._error(f'Unresolved symbol: {sym}')

      self._note()

      self._note('Some dependencies might be changed, thus the symbol(s) '

                 'above cannot be resolved.')

      self._note('Please re-build the prebuilt file: "{}".'

                 .format(self._file_path))

      self._note(f'Please re-build the prebuilt file: "{self._file_path}".')

      self._note()

      self._note('If this is a new prebuilt file and it is designed to have '