sv.c: Don’t do SvAMAGIC_off in newSVrv

This has been useless since the flag was moved to the referent in com-
mit dd2eae66.  rv is undefined by the time this statement is reached
if it was a reference.

diff --git a/sv.c b/sv.c
index dcb06a3..1f5e2f0 100644 (file)
--- a/sv.c
+++ b/sv.c
@@ -9330,7 +9330,6 @@ Perl_newSVrv(pTHX_ SV *const rv, const char *const classname)
     new_SV(sv);
 
     SV_CHECK_THINKFIRST_COW_DROP(rv);
-    (void)SvAMAGIC_off(rv);
 
     if (SvTYPE(rv) >= SVt_PVMG) {
        const U32 refcnt = SvREFCNT(rv);