Add missing RequestQueue parameter and wrong nullable

src/Discord.Net.Rest/DiscordRestClient.cs

@@ -28,10 +28,11 @@ namespace Discord.Rest
         internal DiscordRestClient(DiscordRestConfig config, API.DiscordRestApiClient api) : base(config, api) { }
 
         private static API.DiscordRestApiClient CreateApiClient(DiscordRestConfig config)
-            => new API.DiscordRestApiClient(config.RestClientProvider, 
-				DiscordRestConfig.UserAgent, 
-				rateLimitPrecision: config.RateLimitPrecision, 
-				useSystemClock: config.UseSystemClock);
+            => new API.DiscordRestApiClient(config.RestClientProvider,
+                DiscordRestConfig.UserAgent,
+                null,
+                rateLimitPrecision: config.RateLimitPrecision,
+                useSystemClock: config.UseSystemClock);
 
         internal override void Dispose(bool disposing)
         {

src/Discord.Net.Rest/Entities/Gateway/GatewayLimits.cs

@@ -91,7 +91,7 @@ namespace Discord.Rest
         }
         
 
-        internal static GatewayLimits GetOrCreate(GatewayLimits? limits)
+        internal static GatewayLimits GetOrCreate(GatewayLimits limits)
             => limits ?? Default;
 
         public GatewayLimits Clone()