[Bug c/71157] -Wnull-dereference false alarm in wrong function

[eggert at gnu dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71157

--- Comment #6 from Paul Eggert <eggert at gnu dot org> ---
> this is because it thinks skip_space() may return NULL:

That sounds like a bug, then, as skip_spaces immediately dereferences its
argument, so it cannot possibly return NULL.

Also, skip_spaces is never passed an argument that could possibly be NULL, so
even if the function simply returns its argument the result cannot be NULL.