修复一个可能的bug

Falcon.SugarApi/ApiDefinistions/ApiControllerBase.cs

@@ -129,7 +129,7 @@ namespace Falcon.SugarApi.ApiDefinistions
         /// <param name="exAction">异常处理方法</param>
         protected virtual void ThrowApiException(string msg, Exception innException, Action<ApiException> exAction) {
             var ex = new ApiException(msg, innException);
-            exAction(ex);
+            exAction?.Invoke(ex);
             throw ex;
         }
     }