Check for NULL before use (Coverity ID 203).

diff --git a/engines/ccgost/gost_ameth.c b/engines/ccgost/gost_ameth.c
index 0a896039df831468de0bc7fc0e3102428cdc5454..b9d9ba734b64f79a96da4c0fb87074b4038b7a89 100644 (file)
--- a/engines/ccgost/gost_ameth.c
+++ b/engines/ccgost/gost_ameth.c
@@ -415,20 +415,21 @@ static int print_gost_01(BIO *out, const EVP_PKEY *pkey, int indent,
                        BN_print(out,key);
                BIO_printf(out,"\n");
                }
-       if (type >=1) 
+       if (type >= 1) 
                {
                BN_CTX *ctx = BN_CTX_new();
                BIGNUM *X,*Y;
                const EC_POINT *pubkey;
                const EC_GROUP *group;
-               BN_CTX_start(ctx);
-               X= BN_CTX_get(ctx);
-               Y=BN_CTX_get(ctx);
+
                if (!ctx) 
                        {
                        GOSTerr(GOST_F_PRINT_GOST_01,ERR_R_MALLOC_FAILURE);
                        return 0;
                        }
+               BN_CTX_start(ctx);
+               X = BN_CTX_get(ctx);
+               Y = BN_CTX_get(ctx);
                pubkey = EC_KEY_get0_public_key((EC_KEY *)EVP_PKEY_get0((EVP_PKEY *)pkey));
                group = EC_KEY_get0_group((EC_KEY *)EVP_PKEY_get0((EVP_PKEY *)pkey));
                if (!EC_POINT_get_affine_coordinates_GFp(group,pubkey,X,Y,ctx))