From 8f095aa63b5e7a2b99f8d42b6af06ea23fcfca81 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 9 Sep 2012 20:45:47 +0530
Subject: [PATCH] And another potential leak

---
 src/calibre/utils/windows/winutil.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/calibre/utils/windows/winutil.c b/src/calibre/utils/windows/winutil.c
index 384e2d1e28..242fe99fa1 100644
--- a/src/calibre/utils/windows/winutil.c
+++ b/src/calibre/utils/windows/winutil.c
@@ -683,8 +683,10 @@ winutil_get_usb_devices(PyObject *self, PyObject *args) {
 	// Create a Device information set with all USB devices
     hDevInfo = create_device_info_set(NULL, L"USB", 0,
             DIGCF_PRESENT | DIGCF_ALLCLASSES);
-    if (hDevInfo == INVALID_HANDLE_VALUE)
+    if (hDevInfo == INVALID_HANDLE_VALUE) { 
+        Py_DECREF(devices);
         return NULL;
+    }
     // Enumerate through the set
     for (i=0; iterate; i++) {
         buffer = get_registry_property(hDevInfo, i, SPDRP_HARDWAREID, &iterate);