[PATCH 3/6] vfprintf: Define WORK_BUFFER_SIZE

[Paul Eggert]

Florian Weimer wrote:
> -  CHAR_T work_buffer[1000];
> +#define WORK_BUFFER_SIZE 1000
> +  CHAR_T work_buffer[WORK_BUFFER_SIZE];

Another nit: I suggest avoiding the macro, as it's confusing when #defined 
inside a function body but intended to be used outside the function, and instead 
doing this at the top level:

enum { WORK_BUFFER_SIZE = 1000 };

The general idea is to use a macro only when necessary.