usb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear.
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.4.298 by commit f976dd7011150244a7ba820f2c331e9fb253befa, it was introduced in version v4.0 by commit 5e33f6fdf735cda1d4580fe6f1878da05718fe73. For more details please see the references link.