fails to build with default GCC 15 settings

[marcusmueller]

… due to building length N+1 strings (i.e. "ABCD", that's 5 bytes, due to the null terminator), and using them as length N chararrays (i.e., char tooshort[4] = "ABCD";).

I have a fix for this. Are you accepting PRs?

[Mictronics]

Please create a PR.