Returns a flag telling if the current metadata block is the last.
\param iterator A pointer to an existing initialized iterator.
\assert
\code iterator != NULL \endcode
\a iterator has been successfully initialized with
FLAC__metadata_simple_iterator_init()
\retval FLAC__bool
\c true if the current metadata block is the last in the file,
else \c false.
Returns a flag telling if the current metadata block is the last.
\param iterator A pointer to an existing initialized iterator. \assert \code iterator != NULL \endcode \a iterator has been successfully initialized with FLAC__metadata_simple_iterator_init() \retval FLAC__bool \c true if the current metadata block is the last in the file, else \c false.