Merge pull request #952 from bettio/crypto_one_time-fix-ensure-size

otp_crypto: make sure ensure heap size includes binary header

Use term_binary_heap_size for exact size calculation before ensuring memory.

These changes are made under both the "Apache 2.0" and the "GNU Lesser General
Public License 2.1 or later" license terms (dual license).

SPDX-License-Identifier: Apache-2.0 OR LGPL-2.1-or-later

src/libAtomVM/otp_crypto.c

@@ -532,7 +532,8 @@ static term nif_crypto_crypto_one_time(Context *ctx, int argc, term argv[])
     free(allocated_iv_data);
     free(allocated_data_data);
 
-    if (UNLIKELY(memory_ensure_free(ctx, temp_buf_size) != MEMORY_GC_OK)) {
+    int ensure_size = term_binary_heap_size(temp_buf_size);
+    if (UNLIKELY(memory_ensure_free(ctx, ensure_size) != MEMORY_GC_OK)) {
         free(temp_buf);
         RAISE_ERROR(OUT_OF_MEMORY_ATOM);
     }