Disable TmemstatMng before writing the tree header

git-svn-id: http://root.cern.ch/svn/root/trunk@35700 27541ba8-7e3a-0410-8455-c3a389f83636

misc/memstat/src/TMemStatMng.cxx

@@ -128,11 +128,14 @@ void TMemStatMng::Close()
    //fgInstance->fDumpFile->WriteObject(fgInstance->fFAddrsList, "FAddrsList");
 
    // to be documented
+   fgInstance->Disable();
    fgInstance->fDumpTree->AutoSave();
    fgInstance->fDumpTree->GetUserInfo()->Delete();
    
    printf("TMemStat Tree saved to file %s\n",fgInstance->fDumpFile->GetName());
 
+   delete fgInstance->fDumpFile;
+   //fgInstance->fDumpFile->Close();
    //delete fgInstance->fFAddrsList;
    //delete fgInstance->fSysInfo;