Comment added

src/main/autoUpdate.js

@@ -20,6 +20,8 @@ export function quitAndInstall() {
   setImmediate(() => {
     const browserWindows = BrowserWindow.getAllWindows()
 
+    // Fixes quitAndInstall not quitting on macOS, as suggested on
+    // https://github.com/electron-userland/electron-builder/issues/1604#issuecomment-306709572
     app.removeAllListeners('window-all-closed')
     browserWindows.forEach(browserWindow => {
       browserWindow.removeAllListeners('close')