Bug 1098151 - Make the test a bit more forgiving to pass on Mac, like the following test.

MANUAL PUSH: Fix orange.

CLOSED TREE

editor/libeditor/tests/test_bug1094000.html

@@ -39,7 +39,7 @@ function runTests() {
   var editor5 = document.getElementById("editor5");
   var editor6 = document.getElementById("editor6");
 
-  is(editor1.getBoundingClientRect().height, editor0.getBoundingClientRect().height,
+  ok(Math.abs(editor1.getBoundingClientRect().height - editor0.getBoundingClientRect().height) <= 1,
      "an editor having a <br> element and an empty editor should be same height");
   ok(Math.abs(editor1.getBoundingClientRect().height - editor2.getBoundingClientRect().height) <= 1,
      "an editor having only a <br> element and an editor having \"a\" should be same height");