From aeb88b747dcc38fab0646a6f31a3b94fb7272e32 Mon Sep 17 00:00:00 2001
From: "Marshall T. Vandegrift" <llasram@gmail.com>
Date: Tue, 18 Nov 2008 00:09:39 -0500
Subject: [PATCH] Better on #1120 et al. -- raise on exception cleanly.

---
 src/calibre/utils/lzx/lzxmodule.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/calibre/utils/lzx/lzxmodule.c b/src/calibre/utils/lzx/lzxmodule.c
index a1917b5749..c45bb22c95 100644
--- a/src/calibre/utils/lzx/lzxmodule.c
+++ b/src/calibre/utils/lzx/lzxmodule.c
@@ -187,6 +187,7 @@ decompress(PyObject *self, PyObject *args)
 
     if (err != MSPACK_ERR_OK) {
         Py_DECREF(retval);
+        retval = NULL;
         PyErr_SetString(LzxError, "LZX decompression failed");
     }