ffi: reorder initializations in carray-buf.

* ffi.c (carray_buf): Do the buf_get first, then
length_buf, since buf_get takes a self argument.
This way the diagnostic is better if the object
isn't a buf.

1 files changed, 1 insertions, 1 deletions

diff --git a/ffi.c b/ffi.c
index 72d3ae35..c8819faf 100644
--- a/ffi.c
+++ b/ffi.c
@@ -2608,8 +2608,8 @@ val carray_blank(val nelem, val type)
 val carray_buf(val buf, val type)
 {
   val self = lit("carray-buf");
-  cnum blen = c_num(length_buf(buf));
   mem_t *data = buf_get(buf, self);
+  cnum blen = c_num(length_buf(buf));
   struct txr_ffi_type *tft = ffi_type_struct(type);
   cnum nelem = if3(tft->size, blen / tft->size, 0);
   return make_carray(type, data, nelem, buf);