#25 - Fix request stream async memory leak, dispose RequestStreamAsyncResult.

src/Microsoft.Net.Http.Server/RequestProcessing/RequestStream.cs

@@ -566,6 +566,7 @@ namespace Microsoft.Net.Http.Server
                         }
                     }
                 }
+                Dispose();
             }
 
             internal void Fail(Exception ex)
@@ -582,6 +583,7 @@ namespace Microsoft.Net.Http.Server
                         // TODO: Log
                     }
                 }
+                Dispose();
             }
 
             [SuppressMessage("Microsoft.Usage", "CA2216:DisposableTypesShouldDeclareFinalizer", Justification = "The disposable resource referenced does have a finalizer.")]