app: fastboot: Fix command handler for unknown commands

If an unknown oem command is passed to command handler, the
fastboot daemon does not return failure since the fastboot
state is not COMMAND_STATE. We should change fastboot state
COMMAND_STATE when we enter the fastboot command handle loop
instead of changing just before handling the command.

CRs-Fixed: 585869
Change-Id: I9bdd7d42309113eb9fcd5f079762152cf9c03cda
1 file changed