adb: daemon: Assign valid fd to usb_handle ep0 file descriptor

Bug: http://b/129283234
Test: treehugger
Change-Id: I2d005e17ccb45af95351c074cc53f6cfc53b5fdd
Merged-In: I2d005e17ccb45af95351c074cc53f6cfc53b5fdd
(cherry picked from commit 1cbe5edbc3b02213e4061bf443dcf1ac8a7ba8bf)
1 file changed