xo: Fix @typescript-eslint/prefer-nullish-coalescing.

Signed-off-by: Anders Kaseorg <[email protected]>

Author: andersk

app/renderer/js/clipboard-decrypter.ts

@@ -33,10 +33,7 @@ export class ClipboardDecrypterImplementation implements ClipboardDecrypter {
     this.pasted = new Promise((resolve) => {
       let interval: NodeJS.Timeout | null = null;
       const startPolling = () => {
-        if (interval === null) {
-          interval = setInterval(poll, 1000);
-        }
-
+        interval ??= setInterval(poll, 1000);
         void poll();
       };