main.cpp: exit gracefully when received SIGINT

delete tlbcontroller calls all the destructor of the objects that were allocated.

This also free's all the file descriptor that were allocated to the program hence
flushes the output buffered in memory to the output files

Author: 0mega28

src/main.cpp

@@ -70,6 +70,8 @@ void sigint_handler(int sig_num)
 
 	/* Print Statistics */
 	tlbcontroller->print_statistics();
+	/* Clean up memory */
+	delete tlbcontroller;
 
 	std::cout << "Exiting...\n";
 	exit(EXIT_FAILURE);