Save 2B flash, fix compiler warning:

In file included from sketch/ConfigurationStore.cpp:5:0:
sketch/ConfigurationStore.h: In function 'uint8_t calibration_status_store(uint8_t)':
sketch/ConfigurationStore.h:24:124: warning: no return statement in function returning non-void [-Wreturn-type]
 inline uint8_t calibration_status_store(uint8_t status) { eeprom_update_byte((uint8_t*)EEPROM_CALIBRATION_STATUS, status); }

Firmware/ConfigurationStore.h

@@ -21,7 +21,7 @@ FORCE_INLINE void Config_RetrieveSettings() { Config_ResetDefault(); Config_Prin
 #endif
 
 inline uint8_t calibration_status() { return eeprom_read_byte((uint8_t*)EEPROM_CALIBRATION_STATUS); }
-inline uint8_t calibration_status_store(uint8_t status) { eeprom_update_byte((uint8_t*)EEPROM_CALIBRATION_STATUS, status); }
+inline void calibration_status_store(uint8_t status) { eeprom_update_byte((uint8_t*)EEPROM_CALIBRATION_STATUS, status); }
 inline bool calibration_status_pinda() { return eeprom_read_byte((uint8_t*)EEPROM_CALIBRATION_STATUS_PINDA); }
 
 #endif//CONFIG_STORE_H