Avoid an unused temp scalar in sv.c:S_sv_unglob

This is something I missed in 804b5ed7.

diff --git a/sv.c b/sv.c
index fc8ee86..019e8dd 100644 (file)
--- a/sv.c
+++ b/sv.c
@@ -9479,7 +9479,7 @@ S_sv_unglob(pTHX_ SV *const sv, U32 flags)
     dVAR;
     void *xpvmg;
     HV *stash;
-    SV * const temp = sv_newmortal();
+    SV * const temp = flags & SV_COW_DROP_PV ? NULL : sv_newmortal();
 
     PERL_ARGS_ASSERT_SV_UNGLOB;