Don't leak memory on X509_TRUST_add() error path

The X509_TRUST_add() function was leaking an X509_TRUST object on error.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

crypto/x509/x509_trs.c

@@ -148,7 +148,7 @@ int X509_TRUST_add(int id, int flags, int (*ck) (X509_TRUST *, X509 *, int),
     /* dup supplied name */
     if ((trtmp->name = OPENSSL_strdup(name)) == NULL) {
         X509err(X509_F_X509_TRUST_ADD, ERR_R_MALLOC_FAILURE);
-        return 0;
+        goto err;
     }
     /* Keep the dynamic flag of existing entry */
     trtmp->flags &= X509_TRUST_DYNAMIC;
@@ -165,14 +165,20 @@ int X509_TRUST_add(int id, int flags, int (*ck) (X509_TRUST *, X509 *, int),
         if (trtable == NULL
             && (trtable = sk_X509_TRUST_new(tr_cmp)) == NULL) {
             X509err(X509_F_X509_TRUST_ADD, ERR_R_MALLOC_FAILURE);
-            return 0;
+            goto err;;
         }
         if (!sk_X509_TRUST_push(trtable, trtmp)) {
             X509err(X509_F_X509_TRUST_ADD, ERR_R_MALLOC_FAILURE);
-            return 0;
+            goto err;
         }
     }
     return 1;
+ err:
+    if (idx == -1) {
+        OPENSSL_free(trtmp->name);
+        OPENSSL_free(trtmp);
+    }
+    return 0;
 }
 
 static void trtable_free(X509_TRUST *p)