fix relay bug
fix relay bug

jdesbonnet/RFM69_LPC812_firmware,jdesbonnet/RFM69_LPC812_firmware,jdesbonnet/RFM69_LPC812_firmware,jdesbonnet/RFM69_LPC812_firmware,jdesbonnet/RFM69_LPC812_firmware,jdesbonnet/RFM69_LPC812_firmware