[patch]: Fix memory leak of target-descriptions.c

[Michael Snyder]

On Mon, 2008-06-30 at 16:58 +0800, teawater wrote:
> target-descriptions.c has a memory leek in function
> maint_print_c_tdesc_cmd. char *function is xmalloc at line 1016.
> There are returns at the end of this function without calling free.
> And this variable is just used in this function. So I change it to
> "alloca".
> This patch is for the GDB cvs version.
> 
> 2008-06-21  Hui Zhu  <teawater@gmail.com>
>        * target-descriptions.c (maint_print_c_tdesc_cmd): Fix a memory leak.
> 
> --- a/gdb/target-descriptions.c
> +++ b/gdb/target-descriptions.c
> @@ -1013,7 +1013,7 @@ maint_print_c_tdesc_cmd (char *args, int
>      error (_("The current target description did not come from an XML file."));
> 
>    filename = lbasename (target_description_filename);
> -  function = xmalloc (strlen (filename) + 1);
> +  function = alloca (strlen (filename) + 1);
>    for (inp = filename, outp = function; *inp != '\0'; inp++)
>      if (*inp == '.')
>        break;

This looks right to me -- committed.