should c-indentation-style be marked as safe?

[Dan Nicolaescu]

We have this in emacs/lib-src/etags.c:

/*
 * Local Variables:
 * c-indentation-style: gnu

But the docstring for  c-indentation-style says:
  "Name of the currently installed style.
Don't change this directly; call `c-set-style' instead."

So what should we do here: mark c-indentation-style as safe or delete
the local variable from etags.c ?