Bugfix: Hard Fault  hmc5883 with not params
Bugfix: Hard Fault  hmc5883 with not params

Fault results from if (!strcmp(verb, "start")) {``` with null verb

mje-nz/PX4-Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,dagar/Firmware,PX4/Firmware,PX4/Firmware,acfloria/Firmware,PX4/Firmware,Aerotenna/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,jlecoeur/Firmware,acfloria/Firmware,PX4/Firmware,dagar/Firmware,mcgill-robotics/Firmware,mje-nz/PX4-Firmware,PX4/Firmware,dagar/Firmware,krbeverx/Firmware,PX4/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,PX4/Firmware,jlecoeur/Firmware,Aerotenna/Firmware,jlecoeur/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,dagar/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,krbeverx/Firmware,Aerotenna/Firmware,jlecoeur/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,jlecoeur/Firmware,krbeverx/Firmware,acfloria/Firmware,dagar/Firmware,jlecoeur/Firmware,krbeverx/Firmware,Aerotenna/Firmware,jlecoeur/Firmware,dagar/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,mcgill-robotics/Firmware,Aerotenna/Firmware,mcgill-robotics/Firmware,mcgill-robotics/Firmware,acfloria/Firmware,jlecoeur/Firmware,dagar/Firmware,mje-nz/PX4-Firmware