secp256k1_schnorrsig_sign: initialize zNData to NULL
secp256k1_schnorrsig_sign: initialize zNData to NULL

afk11/secp256k1-php,afk11/secp256k1-php,afk11/secp256k1-php,afk11/secp256k1-php,afk11/secp256k1-php