build: clear 107 warnings - dead private fields (#15574)

src/slic3r/GUI/DeviceCore/DevConfig.h

@@ -54,7 +54,7 @@ public:
     void ParseCalibrationConfig(const json& print_json); //cali
 
 private:
-    MachineObject* m_obj;
+    [[maybe_unused]] MachineObject* m_obj;
 
     /*configure vals*/
     // chamber

src/slic3r/GUI/DeviceCore/DevExtensionTool.h

@@ -31,7 +31,7 @@ protected:
     DevExtensionTool(MachineObject* obj);
 
 private:
-    MachineObject* m_owner = nullptr;
+    [[maybe_unused]] MachineObject* m_owner = nullptr;
 
     enum MountState
     {

src/slic3r/GUI/DeviceCore/DevFilaAmsSetting.h

@@ -28,7 +28,7 @@ public:
     void SetAutoRefillEnabled(bool enable) { m_enable_auto_refill = enable; }
 
 private:
-    DevFilaSystem* m_owner = nullptr;
+    [[maybe_unused]] DevFilaSystem* m_owner = nullptr;
 
     std::optional<bool> m_enable_detect_on_insert = false;
     bool m_enable_detect_on_powerup = false;

src/slic3r/GUI/DeviceCore/DevHMS.h

@@ -21,7 +21,7 @@ public:
     const std::vector<DevHMSItem>& GetHMSItems() const { return m_hms_list; };
 
 private:
-    MachineObject* m_object = nullptr;
+    [[maybe_unused]] MachineObject* m_object = nullptr;
 
     // all hms for this machine
     std::vector<DevHMSItem>  m_hms_list;

src/slic3r/GUI/DeviceCore/DevInfo.h

@@ -34,7 +34,7 @@ private:
     //std::string m_connect_type;
     //std::string m_bind_state;
 
-    MachineObject* m_owner = nullptr;
+    [[maybe_unused]] MachineObject* m_owner = nullptr;
 };
 
 } // namespace Slic3r

src/slic3r/GUI/DeviceCore/DevStatus.h

@@ -36,7 +36,7 @@ public:
     void ParseStatus(const nlohmann::json& print_jj);
 
 private:
-    MachineObject *m_owner = nullptr;
+    [[maybe_unused]] MachineObject *m_owner = nullptr;
     std::optional<DevJobState> m_job_state; // could be nullopt for some old firmware
 };
 

src/slic3r/GUI/DeviceCore/DevStorage.h

@@ -31,7 +31,7 @@ public:
     bool is_timelapse_storage_low(const std::string& storage) const;
 
 private:
-    MachineObject *m_owner;
+    [[maybe_unused]] MachineObject *m_owner;
     SdcardState    m_sdcard_state  { NO_SDCARD };
     // timelapse storage space info (from device push cam data)
     int tl_internal_free_kb{-1};