pkgtools/libnbcompat: incorrect sha256 hashes with -fstrict-aliasing about pkgsrc HOT 8 CLOSED

diff --git a/sha2.c b/sha2.c
index bdcbd317bdd4..4c9436f98275 100644
--- a/sha2.c
+++ b/sha2.c
@@ -567,7 +567,7 @@ void SHA256_Final(sha2_byte digest[SHA256_DIGEST_LENGTH], SHA256_CTX* context) {
                        *context->buffer = 0x80;
                }
                /* Set the bit count: */
-               *(sha2_word64*)(void *)&context->buffer[SHA256_SHORT_BLOCK_LENGTH] = context->bitcount;
+               memcpy(&context->buffer[SHA256_SHORT_BLOCK_LENGTH], &context->bitcount, sizeof(context->bitcount));

                /* Final transform: */
                SHA256_Transform(context, (sha2_word32*)(void *)context->buffer);
@@ -870,8 +870,8 @@ static void SHA512_Last(SHA512_CTX* context) {
                *context->buffer = 0x80;
        }
        /* Store the length of input data (in bits): */
-       *(sha2_word64*)(void *)&context->buffer[SHA512_SHORT_BLOCK_LENGTH] = context->bitcount[1];
-       *(sha2_word64*)(void *)&context->buffer[SHA512_SHORT_BLOCK_LENGTH+8] = context->bitcount[0];
+       memcpy(&context->buffer[SHA512_SHORT_BLOCK_LENGTH], &context->bitcount[1], sizeof(*context->bitcount));
+       memcpy(&context->buffer[SHA512_SHORT_BLOCK_LENGTH+8], &context->bitcount[0], sizeof(*context->bitcount));

        /* Final transform: */
        SHA512_Transform(context, (sha2_word64*)(void *)context->buffer);