Fix compile error with IGNORE_MISC_WIPE_DATA in some trees

// walking through the factory reset screen - without actually doing a factory reset

#ifdef IGNORE_MISC_WIPE_DATA

                if (!strcmp(arg, "--wipe_data")) {

                    (*argv)[*argc] = "";

                    (*argv)[*argc] = NULL;

                    *argc = *argc -1;

                    printf("Bootloader arg \"%s\" ignored because TWRP was compiled with TW_IGNORE_MISC_WIPE_DATA\n", arg);

                    continue;