Allow compilation on Mac OS X, which doesn't have MACHINE defined.

While there, specify some casts to satisfy the compiler warnings.

OK schwarze@

1 files changed, 1 insertions, 1 deletions

diff --git a/preconv.c b/preconv.c
index 73fd415f..21013daa 100644
--- a/preconv.c
+++ b/preconv.c
@@ -33,7 +33,7 @@ preconv_encode(struct buf *ib, size_t *ii, struct buf *ob, size_t *oi,
 	int		 nby;
 	unsigned int	 accum;
 
-	cu = ib->buf + *ii;
+	cu = (unsigned char *)ib->buf + *ii;
 	assert(*cu & 0x80);
 
 	if ( ! (*filenc & MPARSE_UTF8))