OSSL_DECODER_CTX_new
if ((dest = OSSL_DECODER_CTX_new()) == NULL) {
if ((ctx = OSSL_DECODER_CTX_new()) == NULL) {
OSSL_DECODER_CTX *OSSL_DECODER_CTX_new(void);
if ((ctx->_.file.decoderctx = OSSL_DECODER_CTX_new()) == NULL) {
ctx->dctx = OSSL_DECODER_CTX_new();