[Bug 27340] WoW Launcher crashes, NULL pointer dereferenced

http://bugs.winehq.org/show_bug.cgi?id=27340

--- Comment #3 from [e-mail] 2011-06-01 03:18:02 CDT ---
The exact stack trace of the crash is:

Backtrace:
=>0 0x7cc98ed0 doc_insert_script+0x30() in mshtml (0x0032e474)
  1 0x7cc6cff6 run_insert_script+0xb5() in mshtml (0x037628e8)
  2 0x0032e550 (0x047c95b8)
  3 0x00000002 (0x7ccf0a28)
  4 0x7cc6cb30 in mshtml (+0x6cb2f) (0x7cc6df60)
  5 0x00000010 (0xb94cec83)

The code in run_insert_script() is:

nsres = nsISupports_QueryInterface(script_iface,
&IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
    if(NS_FAILED(nsres)) {
        ERR("Could not get nsIDOMHTMLScriptElement: %08x\n", nsres);
        return nsres;
    }

So nsscript must still be NULL after calling nsISupports_QueryInterface(), and
NS_FAILED(nsres) is not true.