[hm] Fix bug causing double-duration fan running in long PWM mode
[hm] Fix bug causing double-duration fan running in long PWM mode

shmick/HeaterMeter,shmick/HeaterMeter,shmick/HeaterMeter,dwright134/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,shmick/HeaterMeter,dwright134/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,dwright134/HeaterMeter,kdakers80/HeaterMeter,kdakers80/HeaterMeter,CapnBry/HeaterMeter,CapnBry/HeaterMeter,kdakers80/HeaterMeter,dwright134/HeaterMeter,dwright134/HeaterMeter,CapnBry/HeaterMeter,kdakers80/HeaterMeter,shmick/HeaterMeter,shmick/HeaterMeter,kdakers80/HeaterMeter,kdakers80/HeaterMeter,shmick/HeaterMeter,dwright134/HeaterMeter