From 113269d00c6e76725a69d354c9c0359eaf032eb1 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 9 Sep 2012 20:38:14 +0530
Subject: [PATCH] Another leak?

---
 src/calibre/utils/windows/winutil.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/calibre/utils/windows/winutil.c b/src/calibre/utils/windows/winutil.c
index 0134bf21ed..c00bcc4b41 100644
--- a/src/calibre/utils/windows/winutil.c
+++ b/src/calibre/utils/windows/winutil.c
@@ -196,7 +196,8 @@ get_registry_property(HDEVINFO hDevInfo, DWORD index, DWORD property, BOOL *iter
             buffersize,
             &buffersize)) {
             if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
-                buffer = (LPTSTR)PyMem_Malloc(2*buffersize); // Twice for bug in Win2k
+                if (buffer != NULL) { PyMem_Free(buffer); buffer = NULL; }
+                buffer = (LPWSTR)PyMem_Malloc(2*buffersize); // Twice for bug in Win2k
             } else {
             	PyMem_Free(buffer);
             	PyErr_SetFromWindowsErr(0);