The copy is a "deep" copy, i.e. dynamically allocated data within the
object is also copied. The caller takes ownership of the new block and
is responsible for freeing it with FLAC__metadata_object_delete().
\param object Pointer to object to copy.
\assert
\code object != NULL \endcode
\retval FLAC__StreamMetadata*
\c NULL if there was an error allocating memory, else the new instance.
Create a copy of an existing metadata object.
The copy is a "deep" copy, i.e. dynamically allocated data within the object is also copied. The caller takes ownership of the new block and is responsible for freeing it with FLAC__metadata_object_delete().
\param object Pointer to object to copy. \assert \code object != NULL \endcode \retval FLAC__StreamMetadata* \c NULL if there was an error allocating memory, else the new instance.