Improve const-correctness

[elfring]

I suggest to add the key word “const” to the type specifiers for parameters like the following.

• path (function “loaduse”)
• ns (function “setns”)

Would you like to apply the advices from an article to more places in your source files?

[oridb]

Would you like to apply the advices from an article to more places in your source files?

No, not really.