xrUICore/Buttons/UICheckButton.h: default initialize m_opt_backup_value directly in the class

Author: Xottab-DUTY

src/xrUICore/Buttons/UICheckButton.cpp

@@ -12,7 +12,6 @@ CUICheckButton::CUICheckButton()
     TextItemControl()->SetTextAlignment(CGameFont::alLeft);
     SetButtonAsSwitch(true);
     m_pDependControl = NULL;
-    m_opt_backup_value = false;
 }
 
 void CUICheckButton::SetDependControl(CUIWindow* pWnd) { m_pDependControl = pWnd; }

src/xrUICore/Buttons/UICheckButton.h

@@ -34,7 +34,7 @@ class XRUICORE_API CUICheckButton final : public CUI3tButton, public CUIOptionsI
     pcstr GetDebugType() override { return "CUICheckButton"; }
 
 private:
-    bool m_opt_backup_value;
+    bool m_opt_backup_value{};
     void InitTexture2(LPCSTR texture_name);
     CUIWindow* m_pDependControl;
 };