[win32] merge changes#906,907,909,910 from maintbranch

p4raw-link: @910 on //depot/maint-5.004/perl: ae941ac0da8f453f0d31df7b7293e50b3e5a46f1
p4raw-link: @909 on //depot/maint-5.004/perl: 8b3d696ffd11cf2e49f6eaa575b829ab0a55352d
p4raw-link: @907 on //depot/maint-5.004/perl: 3cb3c1abada5765ba4166ebe59e2e20d737ec21b
p4raw-link: @906 on //depot/maint-5.004/perl: ae389c8a29b487f4434c465442dfb611507a4a38

p4raw-id: //depot/win32/perl@977

1 files changed, 5 insertions, 1 deletions

diff --git a/doop.c b/doop.c
index e92f49e668..e527cdee18 100644
--- a/doop.c
+++ b/doop.c
@@ -483,7 +483,11 @@ do_kv(ARGSproto)
 		sv_magic(TARG, Nullsv, 'k', Nullch, 0);
 	    }
 	    LvTYPE(TARG) = 'k';
-	    LvTARG(TARG) = (SV*)hv;
+	    if (LvTARG(TARG) != (SV*)hv) {
+		if (LvTARG(TARG))
+		    SvREFCNT_dec(LvTARG(TARG));
+		LvTARG(TARG) = SvREFCNT_inc(hv);
+	    }
 	    PUSHs(TARG);
 	    RETURN;
 	}