fix library monitor reference

MediaBrowser.Api/Library/LibraryStructureService.cs

@@ -174,6 +174,7 @@ namespace MediaBrowser.Api.Library
         /// Gets or sets the name.
         /// </summary>
         /// <value>The name.</value>
+        [ApiMember(Name = "Path", Description = "The path that was changed.", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "POST")]
         public string Path { get; set; }
     }
     

MediaBrowser.Server.Implementations/IO/LibraryMonitor.cs

@@ -111,12 +111,12 @@ namespace MediaBrowser.Server.Implementations.IO
         private ILibraryManager LibraryManager { get; set; }
         private IServerConfigurationManager ConfigurationManager { get; set; }
 
-        private IFileSystem _fileSystem;
+        private readonly IFileSystem _fileSystem;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="LibraryMonitor" /> class.
         /// </summary>
-        public LibraryMonitor(ILogManager logManager, ITaskManager taskManager, ILibraryManager libraryManager, IServerConfigurationManager configurationManager)
+        public LibraryMonitor(ILogManager logManager, ITaskManager taskManager, ILibraryManager libraryManager, IServerConfigurationManager configurationManager, IFileSystem fileSystem)
         {
             if (taskManager == null)
             {
@@ -127,6 +127,7 @@ namespace MediaBrowser.Server.Implementations.IO
             TaskManager = taskManager;
             Logger = logManager.GetLogger(GetType().Name);
             ConfigurationManager = configurationManager;
+            _fileSystem = fileSystem;
 
             SystemEvents.PowerModeChanged += SystemEvents_PowerModeChanged;
         }

MediaBrowser.ServerApplication/ApplicationHost.cs

@@ -276,7 +276,7 @@ namespace MediaBrowser.ServerApplication
             LibraryManager = new LibraryManager(Logger, TaskManager, UserManager, ServerConfigurationManager, UserDataManager, () => LibraryMonitor, FileSystemManager);
             RegisterSingleInstance(LibraryManager);
 
-            LibraryMonitor = new LibraryMonitor(LogManager, TaskManager, LibraryManager, ServerConfigurationManager);
+            LibraryMonitor = new LibraryMonitor(LogManager, TaskManager, LibraryManager, ServerConfigurationManager, FileSystemManager);
             RegisterSingleInstance(LibraryMonitor);
 
             ProviderManager = new ProviderManager(HttpClient, ServerConfigurationManager, LibraryMonitor, LogManager, FileSystemManager, ItemRepository);