In Hash::Util::FieldHash::_test_uvar_set, the second SvRV(sverf) is not needed.

diff --git a/ext/Hash-Util-FieldHash/FieldHash.xs b/ext/Hash-Util-FieldHash/FieldHash.xs
index ccd7c61..60f5a6e 100644 (file)
--- a/ext/Hash-Util-FieldHash/FieldHash.xs
+++ b/ext/Hash-Util-FieldHash/FieldHash.xs
@@ -464,7 +464,6 @@ CODE:
     if (SvROK(svref) && SvROK(countref)) {
         counter = SvRV(countref);
         sv_setiv(counter, 0);
-        counter = SvRV(countref);
         HUF_add_uvar_magic(
             SvRV(svref),
             NULL,