[macosx] kCGError when opening a new dialog/window.

Steps:
1. Install 7u4 b224 for mac.
2. Run the demo Font2DTest.jar
3. In "Text to Use" field, choose "User Text", or "Text File" . Then a new dialog will open.

Result:
1. Get the following error message:
<Error>: kCGErrorInvalidOperation: Cannot merge groups (yet) for wid 114, otherwid 110
<Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.

Build: b224 (7u4)
Keywords: test-fail-macos
Tests failed (i18n/DemoTest): com/sun/demos/02font2dtest