[hm] Fix compliation with no RFM12
[hm] Fix compliation with no RFM12

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