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(gpgme.info)Destroying Data Buffers

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Destroying Data Buffers
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 - Function: void gpgme_data_release (GpgmeData DH)
     The function `gpgme_data_release' destroys the data object with
     the handle DH.  It releases all associated resources that were not
     provided by the user in the first place.

 - Function: char * gpgme_data_release_and_get_mem (GpgmeData DH,
          size_t *LENGTH)
     The function `gpgme_data_release_and_get_mem' is like
     `gpgme_data_release', except that it returns the data buffer and
     its length that was provided by the object.

     The user has to release the buffer with `free'.  In case the user
     provided the data buffer in non-copy mode, a copy will be made for
     this purpose.

     In case an error returns, or there is no suitable data buffer that
     can be returned to the user, the function will return `NULL'.