Minor, fix calloc call order
diff --git a/src/hb-blob.cc b/src/hb-blob.cc
index 6ce3274..d15a7cb 100644
--- a/src/hb-blob.cc
+++ b/src/hb-blob.cc
@@ -572,7 +572,7 @@
int fd = open (file_name, (writable ? O_RDWR : O_RDONLY) | _O_BINARY, 0);
if (unlikely (fd == -1)) return hb_blob_get_empty ();
- hb_mapped_file_t *file = (hb_mapped_file_t *) calloc (sizeof (hb_mapped_file_t), 1);
+ hb_mapped_file_t *file = (hb_mapped_file_t *) calloc (1, sizeof (hb_mapped_file_t));
struct stat st;
if (unlikely (fstat (fd, &st) == -1)) goto fail;