bignum fuzzer: move new and free calls to the init and cleanup function.

#include <openssl/bn.h>

#include "fuzzer.h"

int FuzzerInitialize(int *argc, char ***argv)

{

    return 1;

}

int FuzzerTestOneInput(const uint8_t *buf, size_t len)

{

static BN_CTX *ctx;

static BIGNUM *b1;

static BIGNUM *b2;

static BIGNUM *b3;

static BIGNUM *b4;

static BIGNUM *b5;

    int success = 0;

    size_t l1 = 0, l2 = 0, l3 = 0;

    int s1 = 0, s2 = 0, s3 = 0;

    if (ctx == NULL) {

int FuzzerInitialize(int *argc, char ***argv)

{

    b1 = BN_new();

    b2 = BN_new();

    b3 = BN_new();

    b4 = BN_new();

    b5 = BN_new();

    ctx = BN_CTX_new();

    return 1;

}

int FuzzerTestOneInput(const uint8_t *buf, size_t len)

{

    int success = 0;

    size_t l1 = 0, l2 = 0, l3 = 0;

    int s1 = 0, s2 = 0, s3 = 0;

    /* Divide the input into three parts, using the values of the first two

     * bytes to choose lengths, which generate b1, b2 and b3. Use three bits

     * of the third byte to choose signs for the three numbers.

void FuzzerCleanup(void)

{

    BN_free(b1);

    BN_free(b2);

    BN_free(b3);

    BN_free(b4);

    BN_free(b5);

    BN_CTX_free(ctx);

}