RT3863 ECC: Add missing NULL check. Set a flag

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>

crypto/ec/ec2_smpl.c

diff --git a/crypto/ec/ec2_smpl.c b/crypto/ec/ec2_smpl.c
index 66bff0d..6d6be30 100644
--- a/crypto/ec/ec2_smpl.c
+++ b/crypto/ec/ec2_smpl.c
@@ -742,6 +742,7 @@
         goto err;
     if (!BN_one(point->Z))
         goto err;
+    point->Z_is_one = 1;
 
     ret = 1;
 

crypto/ec/ec_key.c

diff --git a/crypto/ec/ec_key.c b/crypto/ec/ec_key.c
index f236e3c..2469edc 100644
--- a/crypto/ec/ec_key.c
+++ b/crypto/ec/ec_key.c
@@ -384,6 +384,8 @@
 
     tx = BN_CTX_get(ctx);
     ty = BN_CTX_get(ctx);
+    if (ty == NULL)
+        goto err;
 
 #ifndef OPENSSL_NO_EC2M
     tmp_nid = EC_METHOD_get_field_type(EC_GROUP_method_of(key->group));