Fix #81490: ZipArchive::extractTo() may leak memory

[cmb69]

We always need to free the CWD state.

[remicollet]

I see other return without free ?
Ex:

	if (path_cleaned_len >= MAXPATHLEN || zip_stat(za, file, 0, &sb) != 0) {
		return 0;
	}

[remicollet]

This one also looks strange (shouldn't the free be outside the if ?)

			if (!is_dir_only) {
				zend_string_release_ex(file_basename, 0);
				CWD_STATE_FREE(new_state.cwd);
			}
			return 0;

[cmb69]

Good catches, thanks!

[remicollet]

LGTM