关闭Android Studio时确认退出对话框

When try to exit the Android Studio, it shows a confirmation dialogue box asking 'Do you really want to exit?'. I mistakenly check the 'Do not ask me again' check box when I tried to exit the android studio. Now, I want that confirmation dialogue box back. I checked it out under File -> Settings but I could not able to find any option to restore that feature back. And also googled it but all in vein. When try to exit the Android Studio, it shows a