Fix issue on <select> style change when popup is visible

LayoutTests/fast/forms/select/menulist-type-ahead-find.html

Index: LayoutTests/fast/forms/select/menulist-type-ahead-find.html
diff --git a/LayoutTests/fast/forms/select/menulist-type-ahead-find.html b/LayoutTests/fast/forms/select/menulist-type-ahead-find.html
index bfe6e8f52fe3eb0fcbce8a3a70717c7386ca5a7c..d784b07967146a812f50ba46de3b39f15c385c62 100644
--- a/LayoutTests/fast/forms/select/menulist-type-ahead-find.html
+++ b/LayoutTests/fast/forms/select/menulist-type-ahead-find.html
@@ -4,13 +4,17 @@
 <script>
 function recordIt()
 {
-   document.getElementById("res").innerText = "PASS";
+    var res = document.getElementById("res");
+    if (res.innerText != "FAIL")
+        res.innerText = "PASS";
 }
 
 function testIt(ch, expected)
 {
     document.getElementById("sel").focus();
     eventSender.keyDown(ch);
+    if (document.getElementById("sel").selectedIndex != expected)
+        document.getElementById("res").innerText = "FAIL";
 }
 
 function test()
@@ -19,7 +23,7 @@ function test()
         return;
 
     testRunner.dumpAsText();
-    testIt("c", "cherry");
+    testIt("c", 2);
 }
 </script>
 </head>