fix(ratelimits): fixed buckets breaking after a set amount of time

src/main/java/com/seailz/discordjar/DiscordJar.java

@@ -415,7 +415,9 @@ public void removeBucket(Bucket bucket) {
     public Bucket getBucketForUrl(String url) {
         final List<Bucket> buckets = new ArrayList<>(this.buckets);
         for (Bucket bucket : buckets) {
-            if (bucket.getAffectedRoutes().contains(url)) return bucket;
+            List<String> affectedRoutes = bucket.getAffectedRoutes();
+            if (affectedRoutes == null) continue;
+            if (affectedRoutes.contains(url)) return bucket;
         }
         return null;
     }

src/main/java/com/seailz/discordjar/utils/rest/ratelimit/Bucket.java

@@ -81,6 +81,7 @@ public Bucket addAffectedRoute(String route) {
     }
 
     public List<String> getAffectedRoutes() {
+        if (affectedRoutes == null) return new ArrayList<>();
         return affectedRoutes;
     }