[PATCH] wsdapi: Fix use-after-free when checking for unique prefix (Valgrind)

[Nikolay Sivov]

Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
---

For https://bugs.winehq.org/show_bug.cgi?id=43389

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

diff --git a/dlls/wsdapi/xml.c b/dlls/wsdapi/xml.c
index 145c394f85..824b7ff2fd 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)))
         {
-- 
2.14.1