C++: Make a few things in SAL.qll private where it looks like that was intended (and they're not used outside the file).
C++: Make a few things in SAL.qll private where it looks like that was intended (and they're not used outside the file).

github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql