put write_EoR_file in outputfilehandler destructor as per Dinyar's "todo".

src/OutputFileHandler.cc

@@ -46,7 +46,6 @@ void OutputFileHandler::enqueue_current_file_for_close_and_move_maybe() {
 
 OutputFile OutputFileHandler::getFile(uint32_t run, uint32_t index) {
   // TODO: We should maybe move this out of this function...
-  // TODO: EoR file should be also written at destruction, probably.
   if (current_run_number_ > 0 && current_run_number_ != run && getCMSSWHeaders()) {
     OutputFileHandler::write_EoR_file();
   }

src/OutputFileHandler.h

@@ -44,6 +44,7 @@ class OutputFileHandler {
 
   ~OutputFileHandler() {
     enqueue_current_file_for_close_and_move_maybe();
+    write_EoR_file();
     exit_file_handler_loop();
   }