[Mac] WK1 MiniBrowser should clear delegates before releasing webview
https://bugs.webkit.org/show_bug.cgi?id=107506

Patch by Joseph Pecoraro <pecoraro@apple.com> on 2013-01-21
Reviewed by Dan Bernstein.

* MiniBrowser/mac/WK1BrowserWindowController.m:
(-[WK1BrowserWindowController dealloc]):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@140388 268f45cc-cd09-0410-ab3c-d52691b4dbfc