Mark all places where perl needs to look at a possibly-freed scalar

with a macro SvIS_FREED(sv)

p4raw-id: //depot/perl@26132

1 files changed, 1 insertions, 1 deletions

diff --git a/pp_hot.c b/pp_hot.c
index 24af67eb63..813b606b0b 100644
--- a/pp_hot.c
+++ b/pp_hot.c
@@ -1909,7 +1909,7 @@ PP(pp_iter)
 	}
     }
 
-    if (sv && SvREFCNT(sv) == 0) {
+    if (sv && SvIS_FREED(sv)) {
 	*itersvp = Nullsv;
 	Perl_croak(aTHX_ "Use of freed value in iteration");
     }