fix memory leak

src/kaltracklib/TKalDetCradle.cxx

@@ -53,6 +53,19 @@ TKalDetCradle::TKalDetCradle(Int_t n)
 
 TKalDetCradle::~TKalDetCradle()
 {
+  //std::cout << "TKalDetCradle::~TKalDetCradle() " << this << " " << GetEntries() << std::endl;
+  std::map<TAttElement*, int> det_nelement;
+
+  TIter next(this);
+  TObject *mlp = 0;
+  while ((mlp = next())) {
+    TAttElement* det = const_cast<TAttElement*>(&(dynamic_cast<TAttElement *>(mlp)->GetParent(kFALSE)));
+    if(det_nelement.find(det)!=det_nelement.end()) det_nelement[det]++;
+    else det_nelement[det] = 1;
+  }
+  for (auto it : det_nelement) {
+    delete it.first;
+  }
 }
 
 //_________________________________________________________________________
@@ -79,6 +92,7 @@ void TKalDetCradle::Install(TVKalDetector &det)
         dynamic_cast<TAttElement *>(mlp)->SetParentPtr(&det);
         det.SetParentPtr(this);
     }
+    det.SetOwner(kFALSE);
     fDone = kFALSE;
 }