Alistair Leslie-Hughes : msxml3: Added checks for invalid arguments in queryresult.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 212335e0b8bab15ce01ce6a3403db29019fa6c86
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=212335e0b8bab15ce01ce6a3403db29019fa6c86

Author: Alistair Leslie-Hughes <leslie_alistair at hotmail.com>
Date:   Wed Jul  2 16:15:55 2008 +1000

msxml3: Added checks for invalid arguments in queryresult.

---

 dlls/msxml3/queryresult.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/dlls/msxml3/queryresult.c b/dlls/msxml3/queryresult.c
index d4b837e..1b2070e 100644
--- a/dlls/msxml3/queryresult.c
+++ b/dlls/msxml3/queryresult.c
@@ -118,6 +118,9 @@ static HRESULT WINAPI queryresult_QueryInterface(
 {
     TRACE("%p %s %p\n", iface, debugstr_guid(riid), ppvObject);
 
+    if(!ppvObject)
+        return E_INVALIDARG;
+
     if ( IsEqualGUID( riid, &IID_IUnknown ) ||
          IsEqualGUID( riid, &IID_IDispatch ) ||
          IsEqualGUID( riid, &IID_IXMLDOMNodeList ) )
@@ -255,6 +258,9 @@ static HRESULT WINAPI queryresult_get_item(
 
     TRACE("%p %ld\n", This, index);
 
+    if(!listItem)
+        return E_INVALIDARG;
+
     *listItem = NULL;
 
     if (index < 0 || index >= xmlXPathNodeSetGetLength(This->result->nodesetval))
@@ -274,6 +280,9 @@ static HRESULT WINAPI queryresult_get_length(
 
     TRACE("%p\n", This);
 
+    if(!listLength)
+        return E_INVALIDARG;
+
     *listLength = xmlXPathNodeSetGetLength(This->result->nodesetval);
     return S_OK;
 }
@@ -286,6 +295,9 @@ static HRESULT WINAPI queryresult_nextNode(
 
     TRACE("%p %p\n", This, nextItem );
 
+    if(!nextItem)
+        return E_INVALIDARG;
+
     *nextItem = NULL;
 
     if (This->resultPos >= xmlXPathNodeSetGetLength(This->result->nodesetval))