[PATCH:twm] Add some const.

[Jasper St. Pierre]

Should also mention that it also adds a strdup -- I feel that the code
calling this might conditionally free. Would be nice to double-check
callers.

On Wed, Sep 23, 2015 at 1:58 AM, Thomas Klausner <wiz at netbsd.org> wrote:
> From: Christos Zoulas <christos at NetBSD.org>
>
> Signed-off-by: Thomas Klausner <wiz at NetBSD.org>
> ---
>  src/util.c | 4 ++--
>  src/util.h | 2 +-
>  2 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/src/util.c b/src/util.c
> index 4b94051..5e8f0db 100644
> --- a/src/util.c
> +++ b/src/util.c
> @@ -256,11 +256,11 @@ Zoom(Window wf, Window wt)
>   *  \param name  the filename to expand
>   */
>  char *
> -ExpandFilename(char *name)
> +ExpandFilename(const char *name)
>  {
>      char *newname;
>
> -    if (name[0] != '~') return name;
> +    if (name[0] != '~') return strdup(name);
>
>      newname = malloc (HomeLen + strlen(name) + 2);
>      if (!newname) {
> diff --git a/src/util.h b/src/util.h
> index 7f4527c..4b2d3a8 100644
> --- a/src/util.h
> +++ b/src/util.h
> @@ -64,7 +64,7 @@ in this Software without prior written authorization from The Open Group.
>  extern void MoveOutline ( Window root, int x, int y, int width, int height,
>                           int bw, int th );
>  extern void Zoom ( Window wf, Window wt );
> -extern char * ExpandFilename ( char *name );
> +extern char * ExpandFilename ( const char *name );
>  extern void GetUnknownIcon ( const char *name );
>  extern Pixmap FindBitmap ( const char *name, unsigned int *widthp,
>                            unsigned int *heightp );
> --
> 2.5.2
>
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-- 
  Jasper