fixed virtual signature in HwSavingCtrlObj

include/EigerSavingCtrlObj.h

@@ -51,9 +51,9 @@ namespace lima
       class _EndDownloadCallback;
       friend class _EndDownloadCallback;
 
-      virtual void _prepare();
-      virtual void _start();
-      virtual void _setActive(bool);
+      virtual void _prepare(int =0) override;
+      virtual void _start(int =0) override;
+      virtual void _setActive(bool, int =0) override;
 
       Camera&			m_cam;
       int			m_serie_id;

src/EigerSavingCtrlObj.cpp

@@ -182,7 +182,7 @@ void SavingCtrlObj::stop()
   m_poll_master_file = false;
 }
 
-void SavingCtrlObj::_setActive(bool active)
+void SavingCtrlObj::_setActive(bool active, int)
 {
   DEB_MEMBER_FUNCT();
 
@@ -194,7 +194,7 @@ void SavingCtrlObj::_setActive(bool active)
   active_req->wait();
 }
 
-void SavingCtrlObj::_prepare()
+void SavingCtrlObj::_prepare(int)
 {
   DEB_MEMBER_FUNCT();
 
@@ -215,7 +215,7 @@ void SavingCtrlObj::_prepare()
   m_poll_master_file = true;
 }
 
-void SavingCtrlObj::_start()
+void SavingCtrlObj::_start(int)
 {
   DEB_MEMBER_FUNCT();
   DEB_PARAM() << DEB_VAR1(m_active);