Fix memory leak with qr//. (Closes: #503975)
Adapted from upstream change 34506.
diff --git a/pp_hot.c b/pp_hot.c
index 57fa328..4a4e9e8 100644
--- a/pp_hot.c
+++ b/pp_hot.c
@@ -1198,6 +1198,9 @@ PP(pp_qr)
if (rx->extflags & RXf_TAINTED)
SvTAINTED_on(rv);
sv_magic(sv,(SV*)ReREFCNT_inc(rx), PERL_MAGIC_qr,0,0);
+ if (pkg) {
+ SvREFCNT_dec(pkg);
+ }
XPUSHs(rv);
RETURN;
}