Make Range.detach() a no-op

LayoutTests/fast/dom/Range/range-comparePoint.html

Index: LayoutTests/fast/dom/Range/range-comparePoint.html
diff --git a/LayoutTests/fast/dom/Range/range-comparePoint.html b/LayoutTests/fast/dom/Range/range-comparePoint.html
index a961155a7422b7d22c46243212e08042727fb358..6dec4ac74210c9d42f65f59da5d4af6a284ffec7 100644
--- a/LayoutTests/fast/dom/Range/range-comparePoint.html
+++ b/LayoutTests/fast/dom/Range/range-comparePoint.html
@@ -61,14 +61,12 @@ function test()
         document.getElementById("test8").innerHTML = "test 8 passed"; 
         
     // test 9 - detached range, attached node
-    // firefox throws an exception and does not return a value
+    expectedResult = 1;
     var detachedRange = document.createRange();
-    detachedRange.detach();
-    try {
-        result = detachedRange.comparePoint(document.getElementById("a1"), 0);
-    } catch (e) {
-        document.getElementById("test9").innerHTML = "test 9 passed"; 
-    }
+    detachedRange.detach(); // no-op.
+    result = detachedRange.comparePoint(document.getElementById("a1"), 0);
+    if (result == expectedResult)
+        document.getElementById("test9").innerHTML = "test 9 passed";
         
     // test 10 - attached range, detached node
     // firefox throws an exception