<Swing Dev> [RFC]: 7036148 regression test fix

[Denis Lila]

Hi.

The regression test for 7036148 creates a JFrame, packs
it, but never disposes it. This causes the test to hang
forever, even if it fails with an NPE.

This webrev fixes it:
http://icedtea.classpath.org/~dlila/webrevs/7036148-test/

Should I go ahead and push it (I'll need a bugid though).

Thank you,
Denis.