[C++] IO: Style enhancement for io::CompressedInputStream

[mapleFU]

Describe the enhancement requested

Previously, #39807 has changed decompressed_ and compressed_ behavior. During I re-check this part of the code, I found the boundary check code is ugly. We may need to enhance this.

Component(s)

C++

[mapleFU]

Issue resolved by pull request 41117
#41117