Missing actual write when Stream is passed to cache

[LTRData]

Hi.

At this code path, contents of supplied Stream are read into a byte buffer. But then it is not written anywhere. It seems like there is a binaryWriter.Write(buffer) missing after the read from originating stream. Or, even better, change to using Stream.CopyTo instead and avoid the BinaryWriter object.

FileCache/src/FileCache/FileCacheManager.cs

Line 270 in 4c7482b

// no close or the like for data.Payload - we are not the owner