Fix return value type for _gcry_md_extract

Authored by jukivili on Jul 29 2017, 1:34 PM.

Description

Fix return value type for _gcry_md_extract

* src/gcrypt-int.h (_gcry_md_extract): Use gpg_err_code_t instead of
gpg_error_t for internal function return type.
  • GnuPG-bug-id: T3314
  • Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>