improve stream disposal

MediaBrowser.Server.Implementations/IO/DirectoryWatchers.cs

@@ -410,11 +410,13 @@ namespace MediaBrowser.Server.Implementations.IO
                 return false;
             }
 
-            FileStream stream = null;
-
             try
             {
-                stream = new FileStream(path, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
+                using (new FileStream(path, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite))
+                {
+                    //file is not locked
+                    return false;
+                }
             }
             catch
             {
@@ -424,14 +426,6 @@ namespace MediaBrowser.Server.Implementations.IO
                 //or does not exist (has already been processed)
                 return true;
             }
-            finally
-            {
-                if (stream != null)
-                    stream.Close();
-            }
-
-            //file is not locked
-            return false;
         }
 
         /// <summary>

MediaBrowser.Server.Implementations/Providers/ProviderManager.cs

@@ -457,9 +457,9 @@ namespace MediaBrowser.Server.Implementations.Providers
             {
                 var ms = new MemoryStream();
 
-                using (var input = dataToSave)
+                using (dataToSave)
                 {
-                    await input.CopyToAsync(ms).ConfigureAwait(false);
+                    await dataToSave.CopyToAsync(ms).ConfigureAwait(false);
                 }
 
                 ms.Position = 0;
@@ -470,9 +470,9 @@ namespace MediaBrowser.Server.Implementations.Providers
             {
                 using (var fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read, StreamDefaults.DefaultFileStreamBufferSize, FileOptions.Asynchronous))
                 {
-                    using (var input = dataToSave)
+                    using (dataToSave)
                     {
-                        await input.CopyToAsync(fs, StreamDefaults.DefaultCopyToBufferSize, cancellationToken).ConfigureAwait(false);
+                        await dataToSave.CopyToAsync(fs, StreamDefaults.DefaultCopyToBufferSize, cancellationToken).ConfigureAwait(false);
                     }
                 }