foxwells.vinboard: fix null member if message not cached

src/modules/foxwells.js

@@ -238,8 +238,9 @@ async function createBoardMessage(msg, count) {
   }
 
   return {
-    avatarURL: msg.member.avatarURL("png", 256),
-    username: msg.member.displayName,
+    avatarURL:
+      msg.member?.avatarURL("png", 256) ?? msg.author.avatarURL("png", 256),
+    username: msg.member?.displayName ?? msg.author.username,
     threadID: VINBOARD_THREAD_ID,
     threadName: "Vinboard",
     embeds: [embed],