[PATCH 0/1] MR1960: localspl: Avoid unused variable in fill_builtin_form_info

[Gerald Pfeifer (＠gerald)]

As diagnosed by GCC 13:

dlls/localspl/provider.c: In function ‘fill_builtin_form_info’:
    dlls/localspl/provider.c:3045:16: warning: ‘res_len’ may be used uninitialized [-Wmaybe-uninitialized]
     3045 |             if (res_len)
          |                ^