(perl #134390) don't leak the SV we just created on an early return

1 files changed, 1 insertions, 0 deletions

diff --git a/regexec.c b/regexec.c
index c390bff72e..97ea458a20 100644
--- a/regexec.c
+++ b/regexec.c
@@ -10405,6 +10405,7 @@ S_to_byte_substr(pTHX_ regexp *prog)
 	    && !prog->substrs->data[i].substr) {
 	    SV* sv = newSVsv(prog->substrs->data[i].utf8_substr);
 	    if (! sv_utf8_downgrade(sv, TRUE)) {
+                SvREFCNT_dec_NN(sv);
                 return FALSE;
             }
             if (SvVALID(prog->substrs->data[i].utf8_substr)) {