cut: compilation error

[Bruno Haible via GNU coreutils General Discussion]

On many platforms, I see this compilation error:

  ../src/cut.c: In function ‘main’:
  ../src/cut.c:1322:11: error: a label can only be part of a statement and a 
declaration is not a statement
   1322 |           mcel_t g = delim_mcel = mcel_scanz (optarg);
        |           ^~~~~~

You can't assume ISO C23; many compilers accept only C99 or C11.

Bruno