Reduce code duplication in setTargetHotendSafe

Firmware/temperature.h

@@ -149,8 +149,7 @@ FORCE_INLINE void setTargetHotend(const float &celsius, uint8_t extruder) {
 static inline void setTargetHotendSafe(const float &celsius, uint8_t extruder)
 {
     if (extruder<EXTRUDERS) {
-      target_temperature[extruder] = celsius;
-      resetPID(extruder);
+        setTargetHotend(celsius, extruder);
     }
 }