Nikolay Sivov : wsdapi: Fix use-after-free when checking for unique prefix (Valgrind).

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 3cb938fd4f3f16b52022e109a2ededb40371765b
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=3cb938fd4f3f16b52022e109a2ededb40371765b

Author: Nikolay Sivov <nsivov at codeweavers.com>
Date:   Sat Aug 26 22:12:59 2017 +0300

wsdapi: Fix use-after-free when checking for unique prefix (Valgrind).

Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/wsdapi/xml.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dlls/wsdapi/xml.c b/dlls/wsdapi/xml.c
index 145c394..824b7ff 100644
--- a/dlls/wsdapi/xml.c
+++ b/dlls/wsdapi/xml.c
@@ -529,6 +529,7 @@ static HRESULT WINAPI IWSDXMLContextImpl_AddNamespace(IWSDXMLContext *iface, LPC
     if (setNewPrefix)
     {
         WSDFreeLinkedMemory((void *)ns->PreferredPrefix);
+        ns->PreferredPrefix = NULL;
 
         if ((newPrefix != NULL) && (is_prefix_unique(This->namespaces, newPrefix)))
         {