explicitly ignore the result of sv_utf8_downgrade()

Coverity complains about this because most other calls are
checked.

CIDs 353483, 353003, 353000, 352998, 352995

1 files changed, 1 insertions, 1 deletions

diff --git a/mg.c b/mg.c
index 55cb5bab72..cab3b8227e 100644
--- a/mg.c
+++ b/mg.c
@@ -1264,7 +1264,7 @@ Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
         /* defined environment variables are byte strings; unfortunately
            there is no SvPVbyte_force_nomg(), so we must do this piecewise */
         (void)SvPV_force_nomg_nolen(sv);
-        sv_utf8_downgrade(sv, /* fail_ok */ TRUE);
+        (void)sv_utf8_downgrade(sv, /* fail_ok */ TRUE);
         if (SvUTF8(sv)) {
             Perl_ck_warner_d(aTHX_ packWARN(WARN_UTF8), "Wide character in %s", "setenv");
             SvUTF8_off(sv);