#188 'sudo iiab' code safety, in case /boot/filename contains spaces

iiab

@@ -259,7 +259,7 @@ fi
 # against users (or apt above, or unattended-upgrades) spontaneously AGAIN apt
 # updating /boot e.g. kernel AT ANYTIME -- also many weeks could have passed.
 bootupTime=$(($(date +%s) - $(cut -d. -f1 /proc/uptime)))    # Seconds since...
-bootDirLastModFile=$(date +%s -r /boot/$(ls -t /boot | head -1))   # 1970-01-01
+bootDirLastModFile=$(date +%s -r "/boot/$(ls -t /boot | head -1)") # 1970-01-01
 # Works w/o RTC (real-time clock, i.e. battery) because:
 # Both 'apt' installs to /boot and IIAB installs require Internet (e.g. NTP).
 if (( bootupTime < bootDirLastModFile )); then