[Bug c/63326] whether a #pragma is a statement depends on the type of pragma

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63326

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Maybe we should also warn about

  if (...)
#pragma STDC ...
    foo ();

both if we are treating the #pragma as stmt and if not.  That is, if the
#pragma appears in a place where that would make a difference.