Ensure rate limits are updated when requests fail

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

@@ -1,4 +1,5 @@
-using Newtonsoft.Json;
+using Discord.Net.Rest;
+using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 using System;
 #if DEBUG_LIMITS
@@ -54,9 +55,13 @@ namespace Discord.Net.Queue
 #if DEBUG_LIMITS
                 Debug.WriteLine($"[{id}] Sending...");
 #endif
+                TimeSpan lag = default(TimeSpan);
+                RateLimitInfo info = default(RateLimitInfo);
+                try
+                {
                     var response = await request.SendAsync().ConfigureAwait(false);
-                TimeSpan lag = DateTimeOffset.UtcNow - DateTimeOffset.Parse(response.Headers["Date"]);
+                    lag = DateTimeOffset.UtcNow - DateTimeOffset.Parse(response.Headers["Date"]);
-                var info = new RateLimitInfo(response.Headers);
+                    info = new RateLimitInfo(response.Headers);
 
                     if (response.StatusCode < (HttpStatusCode)200 || response.StatusCode >= (HttpStatusCode)300)
                     {
@@ -107,11 +112,22 @@ namespace Discord.Net.Queue
 #if DEBUG_LIMITS
                         Debug.WriteLine($"[{id}] Success");
 #endif
+                        return response.Stream;
+                    }
+                }
+#if DEBUG_LIMITS
+                catch
+                {
+                    Debug.WriteLine($"[{id}] Error");
+                    throw;
+                }
+#endif
+                finally
+                {
                     UpdateRateLimit(id, request, info, lag, false);
 #if DEBUG_LIMITS
                     Debug.WriteLine($"[{id}] Stop");
 #endif
-                    return response.Stream;
                 }
             }
         }