use the macro that casts to HV * so threaded C++ builds, build

1 files changed, 1 insertions, 1 deletions

diff --git a/sv.c b/sv.c
index 307e1c9c38..c1274e8d99 100644
--- a/sv.c
+++ b/sv.c
@@ -13113,7 +13113,7 @@ perl_clone_using(PerlInterpreter *proto_perl, UV flags,
     PL_utf8_tofold	= sv_dup_inc(proto_perl->Iutf8_tofold, param);
     PL_utf8_idstart	= sv_dup_inc(proto_perl->Iutf8_idstart, param);
     PL_utf8_idcont	= sv_dup_inc(proto_perl->Iutf8_idcont, param);
-    PL_utf8_foldable	= sv_dup_inc(proto_perl->Iutf8_foldable, param);
+    PL_utf8_foldable	= hv_dup_inc(proto_perl->Iutf8_foldable, param);
 
     /* Did the locale setup indicate UTF-8? */
     PL_utf8locale	= proto_perl->Iutf8locale;