Fixes warning in RateLimitingPlugin. Closes #474 (#475)

Author: waldekmastykarz

dev-proxy-plugins/Behavior/RateLimitingPlugin.cs

@@ -127,10 +127,13 @@ public override void Register(IPluginEvents pluginEvents,
         base.Register(pluginEvents, context, urlsToWatch, configSection);
 
         configSection?.Bind(_configuration);
-        _configuration.CustomResponseFile = Path.GetFullPath(ProxyUtils.ReplacePathTokens(_configuration.CustomResponseFile), Path.GetDirectoryName(context.Configuration?.ConfigFile ?? string.Empty) ?? string.Empty);
-        _loader = new RateLimitingCustomResponseLoader(_logger!, _configuration);
-        // load the responses from the configured mocks file
-        _loader.InitResponsesWatcher();
+        if (_configuration.WhenLimitExceeded == RateLimitResponseWhenLimitExceeded.Custom)
+        {
+            _configuration.CustomResponseFile = Path.GetFullPath(ProxyUtils.ReplacePathTokens(_configuration.CustomResponseFile), Path.GetDirectoryName(context.Configuration?.ConfigFile ?? string.Empty) ?? string.Empty);
+            _loader = new RateLimitingCustomResponseLoader(_logger!, _configuration);
+            // load the responses from the configured mocks file
+            _loader.InitResponsesWatcher();
+        }
 
         pluginEvents.BeforeRequest += OnRequest;
         pluginEvents.BeforeResponse += OnResponse;