Added block_counter variable to a preprocessor check, minor bug.

[AlTimofeyev]

Issue

This PR closes issue #6589. There was a minor bug where the variable block_counter in file osrm-backend/include/util/range_table.hpp was considered as "set but not used" during the build phase, causing an error. That variable was added to a preprocessor guard to solve this issue.

Tasklist

• CHANGELOG.md entry (How to write a changelog entry)
• update relevant Wiki pages ==> none edited
• add tests (see testing documentation) ==> no new functions to be tested
• review
• adjust for comments
• cherry pick to release branch

Requirements / Relations

Link any requirements here. Other pull requests this PR is based on?

[AlTimofeyev]

One of the workflow runs failed when checking the CHANGELOG.md file with error:

Run ./scripts/check_taginfo.py taginfo.json profiles/car.lua
clang-format-10 is /usr/bin/clang-format-10
ERROR ON LINE 13:       - ADDED: Print tracebacks for Lua runtime errors [#6564](https://github.com/Project-OSRM/osrm-backend/pull/6564)    
    ERROR: changelog entries must end with an issue or PR link in Markdown format
Error: Process completed with exit code 1.

I'm guessing it could have been because I messed with the order of the Misc items in the changelog a little, so I just put it back the way it was in the master branch.

[SiarheiFedartsou]

Thanks!

[AlTimofeyev]

Of course! Glad I could help!