Fix px4io bind failed message to say safet is off instead of armed. (#5834)
Fix px4io bind failed message to say safet is off instead of armed. (#5834)

Minor message clarity fix.
mje-nz/PX4-Firmware,acfloria/Firmware,mcgill-robotics/Firmware,dagar/Firmware,jlecoeur/Firmware,Aerotenna/Firmware,Aerotenna/Firmware,krbeverx/Firmware,PX4/Firmware,jlecoeur/Firmware,jlecoeur/Firmware,krbeverx/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,PX4/Firmware,acfloria/Firmware,Aerotenna/Firmware,dagar/Firmware,acfloria/Firmware,Aerotenna/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,PX4/Firmware,Aerotenna/Firmware,mcgill-robotics/Firmware,PX4/Firmware,PX4/Firmware,mcgill-robotics/Firmware,krbeverx/Firmware,krbeverx/Firmware,mje-nz/PX4-Firmware,mje-nz/PX4-Firmware,dagar/Firmware,krbeverx/Firmware,krbeverx/Firmware,dagar/Firmware,acfloria/Firmware,PX4/Firmware,jlecoeur/Firmware,acfloria/Firmware,Aerotenna/Firmware,mcgill-robotics/Firmware,PX4/Firmware,jlecoeur/Firmware,mcgill-robotics/Firmware,mje-nz/PX4-Firmware,mcgill-robotics/Firmware,acfloria/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,Aerotenna/Firmware,acfloria/Firmware,jlecoeur/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,dagar/Firmware