secp256k1.c: secp256k1_ec_pubkey_serialize: avoid variable length array
secp256k1.c: secp256k1_ec_pubkey_serialize: avoid variable length array

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