small ide-devfs.sh fix

The file may not exist and errors would be spewed on the console.

ciao, |
Marco | [5277 scT00UUIjEiXA]

diff -ruNp udev-022.orig/extras/ide-devfs.sh udev-022/extras/ide-devfs.sh
@@ -35,7 +35,7 @@ get_dev_number() {
 	echo $((${num} - 1))
 }
 
-if [ -z "$3" ]; then
+if [ -z "$3" -a -f /proc/ide/${1}/media ]; then
 	MEDIA=`cat /proc/ide/${1}/media`
 	if [ "${MEDIA}" = "cdrom" ]; then
 		echo ide/host${HOST}/bus${BUS}/target${TARGET}/lun0/cd cdroms/cdrom`get_dev_number $1 cdrom`

Applied, thanks.

greg k-h

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