core: fix homework create

packages/hydrooj/package.json

@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.13.36",
+    "version": "2.13.37",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",

packages/hydrooj/src/model/contest.ts

@@ -211,9 +211,7 @@ const homework: ContestRule = {
     stat: (tdoc, journal) => {
         const effective = {};
         for (const j of journal) {
-            if (tdoc.pids.includes(j.pid)
-                && !effective[j.pid]
-                && journal[j.pid].accept) {
+            if (tdoc.pids.includes(j.pid) && !effective[j.pid] && j.accept) {
                 effective[j.pid] = j;
             }
         }