mshtml: Added IHTMLScriptElement::get_readyState implementation.

dlls/mshtml/htmlscript.c

@@ -281,8 +281,10 @@ static HRESULT WINAPI HTMLScriptElement_get_defer(IHTMLScriptElement *iface, VAR
 static HRESULT WINAPI HTMLScriptElement_get_readyState(IHTMLScriptElement *iface, BSTR *p)
 {
     HTMLScriptElement *This = impl_from_IHTMLScriptElement(iface);
-    FIXME("(%p)->(%p)\n", This, p);
-    return E_NOTIMPL;
+
+    TRACE("(%p)->(%p)\n", This, p);
+
+    return get_readystate_string(This->readystate, p);
 }
 
 static HRESULT WINAPI HTMLScriptElement_put_onerror(IHTMLScriptElement *iface, VARIANT v)