is no longer valid.
If I<ctx> is NULL nothing is done.
+X509_STORE_CTX_init() sets up I<ctx> for a subsequent verification operation.
It must be called before each call to L<X509_verify_cert(3)> or
L<X509_STORE_CTX_verify(3)>, i.e., a context is only good for one verification.
If you want to verify a further certificate or chain with the same I<ctx>