remove unnecessary code

crypto/dsa/dsa_ossl.c

@@ -285,7 +285,6 @@ err:
 			BN_clear_free(r);
 		}
 	if (ctx_in == NULL) BN_CTX_free(ctx);
-	if (kinv != NULL) BN_clear_free(kinv);
 	BN_clear_free(&k);
 	BN_clear_free(&kq);
 	return(ret);

crypto/evp/evp_pkey.c

@@ -305,7 +305,7 @@ EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8)
 				goto ecerr;
 			}
 			priv_key = EC_KEY_get0_private_key(eckey);
-			if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, ctx))
+			if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, NULL))
 			{
 				EC_POINT_free(pub_key);
 				EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_EC_LIB);
@@ -321,12 +321,8 @@ EVP_PKEY *EVP_PKCS82PKEY(PKCS8_PRIV_KEY_INFO *p8)
 		}
 
 		EVP_PKEY_assign_EC_KEY(pkey, eckey);
-		if (ctx)
-			BN_CTX_free(ctx);
 		break;
 ecerr:
-		if (ctx)
-			BN_CTX_free(ctx);
 		if (eckey)
 			EC_KEY_free(eckey);
 		if (pkey)

engines/e_4758cca.c

@@ -482,8 +482,6 @@ static EVP_PKEY *ibm_4758_load_privkey(ENGINE* e, const char* key_id,
 err:
 	if (keyToken)
 		OPENSSL_free(keyToken);
-	if (rtmp)
-		RSA_free(rtmp);
 	return NULL;
 	}
 
@@ -558,8 +556,6 @@ static EVP_PKEY *ibm_4758_load_pubkey(ENGINE* e, const char* key_id,
 err:
 	if (keyToken)
 		OPENSSL_free(keyToken);
-	if (rtmp)
-		RSA_free(rtmp);
 	return NULL;
 	}
 

engines/e_chil.c

@@ -852,8 +852,6 @@ static EVP_PKEY *hwcrhk_load_privkey(ENGINE *eng, const char *key_id,
 
 	return res;
  err:
-	if (res)
-		EVP_PKEY_free(res);
 #ifndef OPENSSL_NO_RSA
 	if (rtmp)
 		RSA_free(rtmp);

engines/e_sureware.c

@@ -758,8 +758,6 @@ static EVP_PKEY* sureware_load_public(ENGINE *e,const char *key_id,char *hptr,un
 	}
 	return res;
  err:
-	if (res)
-		EVP_PKEY_free(res);
 #ifndef OPENSSL_NO_RSA
 	if (rsatmp)
 		RSA_free(rsatmp);