Check return value of state handler.
Check return value of state handler.

mgiannikouris/vi-firmware,ene-ilies/vi-firmware,ene-ilies/vi-firmware,mgiannikouris/vi-firmware,ene-ilies/vi-firmware,mgiannikouris/vi-firmware,openxc/vi-firmware,ene-ilies/vi-firmware,openxc/vi-firmware,openxc/vi-firmware,openxc/vi-firmware,mgiannikouris/vi-firmware