* lib/obstack.h: Formatting changes.

* lib/obstack.h: Formatting changes.
(obstack_grow, obstack_grow0): Don't cast WHERE at all: it
prevents type checking.
(obstack_ptr_grow, obstack_ptr_grow_fast): When assigning, don't
cast the value to (void *): assigning a `foo *' to a `void *'
variable is valid.
(obstack_int_grow, obstack_int_grow_fast): Don't cast AINT to int.
* src/reader.c (parse_union_decl): Typo: use obstack_1grow to
append characters.