move from deprecated boost.signals to boost.signals2 library

src/Mod/Sandbox/App/DocumentProtector.h

@@ -25,7 +25,6 @@
 #define SANDBOX_DOCUMENTPROTECTOR_H
 
 #include <string>
-#include <boost/signals.hpp>
 #include <boost/bind.hpp>
 #include <App/DocumentObserver.h>
 
@@ -49,9 +48,9 @@ public:
     void recompute();
 
 private:
-    /** Checks if the given document is about to be closed */
-    void slotDeletedDocument(const App::Document& Doc);
-    void validate();
+    /** Checks if the given document is about to be closed */
+    void slotDeletedDocument(const App::Document& Doc);
+    void validate();
 };
 
 class AbstractCallable
@@ -80,8 +79,8 @@ public:
 
     virtual void operator()() const
     {
-        T* v = static_cast<T*>(obj);
-        (v->*method)();
+        T* v = static_cast<T*>(obj);
+        (v->*method)();
     }
 
 private:
@@ -101,8 +100,8 @@ public:
 
     virtual void operator()() const
     {
-        T* v = static_cast<T*>(obj);
-        (v->*method)(arg);
+        T* v = static_cast<T*>(obj);
+        (v->*method)(arg);
     }
 
 private:
@@ -122,7 +121,7 @@ public:
     void purgeTouched();
 
 private:
-    void validate();
+    void validate();
 
 private:
     App::DocumentObject* obj;