1 files changed, 8 insertions, 2 deletions

diff --git a/src/lib/libcrypto/x509/x509_v3.c b/src/lib/libcrypto/x509/x509_v3.c
index 67b1796a92..42e6f0ab05 100644
--- a/src/lib/libcrypto/x509/x509_v3.c
+++ b/src/lib/libcrypto/x509/x509_v3.c
@@ -147,7 +147,13 @@ STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
         int n;
         STACK_OF(X509_EXTENSION) *sk=NULL;
 
-        if ((x != NULL) && (*x == NULL))
+        if (x == NULL)
+                {
+                X509err(X509_F_X509V3_ADD_EXT,ERR_R_PASSED_NULL_PARAMETER);
+                goto err2;
+                }
+
+        if (*x == NULL)
                 {
                 if ((sk=sk_X509_EXTENSION_new_null()) == NULL)
                         goto err;
@@ -163,7 +169,7 @@ STACK_OF(X509_EXTENSION) *X509v3_add_ext(STACK_OF(X509_EXTENSION) **x,
                 goto err2;
         if (!sk_X509_EXTENSION_insert(sk,new_ex,loc))
                 goto err;
-        if ((x != NULL) && (*x == NULL))
+        if (*x == NULL)
                 *x=sk;
         return(sk);
 err: