Fixes RetryMode.RetryRatelimit being ignored (#1036)

src/Discord.Net.Rest/Net/Queue/RequestQueueBucket.cs

@@ -163,7 +163,7 @@ namespace Discord.Net.Queue
                     if (!isRateLimited)
                         throw new TimeoutException();
                     else
-                        throw new RateLimitedException(request);
+                        ThrowRetryLimit(request);
                 }
 
                 lock (_lock)
@@ -181,13 +181,12 @@ namespace Discord.Net.Queue
                         await _queue.RaiseRateLimitTriggered(Id, null).ConfigureAwait(false);
                     }
 
-                    if ((request.Options.RetryMode & RetryMode.RetryRatelimit) == 0)
-                        throw new RateLimitedException(request);
+                    ThrowRetryLimit(request);
 
                     if (resetAt.HasValue)
                     {
                         if (resetAt > timeoutAt)
-                            throw new RateLimitedException(request);
+                            ThrowRetryLimit(request);
                         int millis = (int)Math.Ceiling((resetAt.Value - DateTimeOffset.UtcNow).TotalMilliseconds);
 #if DEBUG_LIMITS
                         Debug.WriteLine($"[{id}] Sleeping {millis} ms (Pre-emptive)");
@@ -198,7 +197,7 @@ namespace Discord.Net.Queue
                     else
                     {
                         if ((timeoutAt.Value - DateTimeOffset.UtcNow).TotalMilliseconds < 500.0)
-                            throw new RateLimitedException(request);
+                            ThrowRetryLimit(request);
 #if DEBUG_LIMITS
                         Debug.WriteLine($"[{id}] Sleeping 500* ms (Pre-emptive)");
 #endif
@@ -309,5 +308,11 @@ namespace Discord.Net.Queue
                 }
             }
         }
+
+        private void ThrowRetryLimit(RestRequest request)
+        {
+            if ((request.Options.RetryMode & RetryMode.RetryRatelimit) == 0)
+                throw new RateLimitedException(request);
+        }
     }
 }