free NULL cleanup 5a

Don't check for NULL before calling a free routine.  This gets X509_.*free:
    x509_name_ex_free X509_policy_tree_free X509_VERIFY_PARAM_free
    X509_STORE_free X509_STORE_CTX_free X509_PKEY_free
    X509_OBJECT_free_contents X509_LOOKUP_free X509_INFO_free

Reviewed-by: Richard Levitte <levitte@openssl.org>

demos/cms/cms_ver.c

diff --git a/demos/cms/cms_ver.c b/demos/cms/cms_ver.c
index 4227531..0f34bbf 100644
--- a/demos/cms/cms_ver.c
+++ b/demos/cms/cms_ver.c
@@ -70,8 +70,7 @@
     if (cms)
         CMS_ContentInfo_free(cms);
 
-    if (cacert)
-        X509_free(cacert);
+    X509_free(cacert);
 
     BIO_free(in);
     BIO_free(out);