OPSLAB: always have opslab_size field

Currently this struct only has the opslab_size field on debugging
builds. Change it so that this field is always present. This will make
it easier to not need a fake partial OPSLOT at the end of the slab with
a NULL opslot_next field, which will in turn simplify converting
opslot_next into  U16 size field shortly.

1 files changed, 2 insertions, 1 deletions

diff --git a/op.h b/op.h
index 9a6d6fb25a..e97683efae 100644
--- a/op.h
+++ b/op.h
@@ -701,8 +701,9 @@ struct opslab {
     OPSLAB *	opslab_head;		/* first slab in chain */
     OP *	opslab_freed;		/* chain of freed ops */
     size_t	opslab_refcnt;		/* number of ops (head slab only) */
+    U16		opslab_size;		/* size of slab in pointers,
+                                           including header */
 # ifdef PERL_DEBUG_READONLY_OPS
-    U16		opslab_size;		/* size of slab in pointers */
     bool	opslab_readonly;
 # endif
     OPSLOT	opslab_slots;		/* slots begin here */