fix: Ignore missing custom .pat after install (#959)

fi

FN="boot.pat"

if [ -d "/$FN" ]; then

  error "The file /$FN does not exist, please make sure that you mapped it to a valid path!" && exit 65

DIR=$(find / -maxdepth 1 -type d -iname "$FN" | head -n 1)

[ ! -d "$DIR" ] && DIR=$(find "$STORAGE" -maxdepth 1 -type d -iname "$FN" | head -n 1)

if [ -d "$DIR" ]; then

  BASE="DSM_VirtualDSM" && URL="file://$DIR" 

  if [[ ! -s "$STORAGE/$BASE.boot.img" ]] || [[ ! -s "$STORAGE/$BASE.system.img" ]]; then

    error "The bind $DIR maps to a file that does not exist!" && exit 65

  fi

fi

FILE=$(find / -maxdepth 1 -type f -iname "$FN" | head -n 1)

[ ! -s "$FILE" ] && FILE=$(find "$STORAGE" -maxdepth 1 -type f -iname "$FN" | head -n 1)

[ -s "$FILE" ] && BASE="DSM_VirtualDSM" && URL="file://$FILE" 

if [ -n "$URL" ]; then

  if [ ! -s "$FILE" ]; then

if [ -n "$URL" ] && [ ! -s "$FILE" ] && [ ! -d "$DIR" ]; then

  BASE=$(basename "$URL" .pat)

  if [ ! -s "$STORAGE/$BASE.system.img" ]; then

    BASE=$(basename "${URL%%\?*}" .pat)

    : "${BASE//+/ }"; printf -v BASE '%b' "${_//%/\\x}"

    BASE=$(echo "$BASE" | sed -e 's/[^A-Za-z0-9._-]/_/g')

  fi

  fi

  if [[ "${URL,,}" != "http"* ]] && [[ "${URL,,}" != "file:"* ]] ; then

    [ ! -s "$STORAGE/$BASE.pat" ] && error "Invalid URL:  $URL" && exit 65

    URL="file://$STORAGE/$BASE.pat"