Jacek Caban : mshtml: Fixed error handling in IHTMLFormElement:: item in IE9+ mode.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 7da84dfe97147fa2eb2e9b582975eec84fa4cc16
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=7da84dfe97147fa2eb2e9b582975eec84fa4cc16

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Thu Feb  8 20:53:48 2018 +0100

mshtml: Fixed error handling in IHTMLFormElement::item in IE9+ mode.

Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/mshtml/htmlform.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/dlls/mshtml/htmlform.c b/dlls/mshtml/htmlform.c
index 2957ad1..51adc20 100644
--- a/dlls/mshtml/htmlform.c
+++ b/dlls/mshtml/htmlform.c
@@ -540,8 +540,11 @@ static HRESULT WINAPI HTMLFormElement_item(IHTMLFormElement *iface, VARIANT name
     *pdisp = NULL;
 
     if(V_VT(&name) == VT_I4) {
-        if(V_I4(&name) < 0)
-            return E_INVALIDARG;
+        if(V_I4(&name) < 0) {
+            *pdisp = NULL;
+            return dispex_compat_mode(&This->element.node.event_target.dispex) >= COMPAT_MODE_IE9
+                ? S_OK : E_INVALIDARG;
+        }
         return htmlform_item(This, V_I4(&name), pdisp);
     }