judge: pass 'this' param to download (strict mode)

packages/hydrojudge/package.json

@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.9.4",
+    "version": "2.9.5",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",

packages/hydrojudge/src/hosts/hydro.ts

@@ -233,7 +233,7 @@ export default class Hydro {
             const tasks = [];
             const queue = new PQueue({ concurrency: 10 });
             for (const name in res.data.links) {
-                tasks.push(queue.add(() => download(name)));
+                tasks.push(queue.add(() => download.call(this, name)));
             }
             queue.start();
             await Promise.all(tasks);