Update BifService.cs

Reversing endianness for integers in the index.bif file.  Little Endian is what we want here, so if BitConverter does NOT give us that, then we need to reverse the bytes.

MediaBrowser.Api/Playback/BifService.cs

@@ -155,7 +155,7 @@ namespace MediaBrowser.Api.Playback
         private byte[] GetBytes(int value)
         {
             byte[] bytes = BitConverter.GetBytes(value);
-            if (BitConverter.IsLittleEndian)
+            if (!BitConverter.IsLittleEndian)
                 Array.Reverse(bytes);
             return bytes;
         }