Update ConfigurationStore.cpp

Unable to compile if ENABLE_AUTO_BED_LEVELING is not set (not set by default).

Marlin/ConfigurationStore.cpp

@@ -274,7 +274,9 @@ void Config_ResetDefault()
     absPreheatHPBTemp = ABS_PREHEAT_HPB_TEMP;
     absPreheatFanSpeed = ABS_PREHEAT_FAN_SPEED;
 #endif
+#ifdef ENABLE_AUTO_BED_LEVELING
     zprobe_zoffset = -Z_PROBE_OFFSET_FROM_EXTRUDER;
+#endif
 #ifdef DOGLCD
     lcd_contrast = DEFAULT_LCD_CONTRAST;
 #endif