From ca28eba3d3656bab394f846f9357227d227059ec Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Tue, 1 Dec 2015 00:18:23 +0200
Subject: [PATCH] Fixed reference leak when read truncated pickle.

---
 Modules/_pickle.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Modules/_pickle.c b/Modules/_pickle.c
index 6ff16bba7df..c357dcc2194 100644
--- a/Modules/_pickle.c
+++ b/Modules/_pickle.c
@@ -5115,8 +5115,10 @@ load_inst(UnpicklerObject *self)
         return -1;
 
     if ((len = _Unpickler_Readline(self, &s)) >= 0) {
-        if (len < 2)
+        if (len < 2) {
+            Py_DECREF(module_name);
             return bad_readline();
+        }
         class_name = PyUnicode_DecodeASCII(s, len - 1, "strict");
         if (class_name != NULL) {
             cls = find_class(self, module_name, class_name);