Merge pull request #3968 from leethomas/fix-window-submenu-crashes
authorCheng Zhao <zcbenz@gmail.com>
Thu, 31 Dec 2015 10:51:45 +0000 (18:51 +0800)
committerCheng Zhao <zcbenz@gmail.com>
Thu, 31 Dec 2015 10:51:45 +0000 (18:51 +0800)
:apple: only add sub menus to Window when they actually have menu iteā€¦


Trivial merge