Updating kernel images number when installing them into live media.

scripts/build/lb_binary_syslinux

@@ -96,10 +96,9 @@ Syslinux_live_entry ()
 	case "${LB_BINARY_IMAGES}" in
 		iso*|usb*)
 			NUMBER="$(ls -1 ${KERNEL_PATH} | grep 'vmlinuz-' | wc -l)"
-			NUMBER="$((${NUMBER} +1))"
 
 			# Do not add numbering to filenames if first kernel/initrd
-			if [ "${NUMBER}" = "1" ]
+			if [ "${NUMBER}" = "2" ]
 			then
 				NUMBER=""
 			fi