give hints only if the result is left in place

releng/manual_isojigdo

@@ -245,10 +245,12 @@ if [ -f "${TMP_DATA_DIR}"/"${REMOTE_IMG}" ]; then
 fi
 
 # last hints
+if [ -d ${GEN_DATA_DIR} ]; then
  printf "\n${SELF}: HINT: manual checks remained to be done:\n"
  printf " * ${GEN_DATA_DIR}/${RELENG_IMG}.iso boots from USB stick and/or optical media.\n"
  printf " * appended FAT partition is mountable.\n"
  printf " * xorriso -indev ${GEN_DATA_DIR}/${RELENG_IMG}.iso -pvd_info\n"
  printf " * fdisk -lu ${GEN_DATA_DIR}/${RELENG_IMG}.iso\n"
+fi
 
 exit 0