Deal correct with filenames with spaces

tmp/post_upgrade_command

@@ -39,14 +39,21 @@ if [ "${PFSENSETYPE}" = "nanobsd" -a -f /etc/localtime ]; then
 	/bin/cp -p /etc/localtime ${ROOT}etc/localtime 2>/dev/null
 fi
 
+# Files may contain spaces
+oIFS=${IFS}
+IFS="
+"
 # Obsolete files - nanobsd doesn't need it since a new image is installed
 # on the other partition
 if [ "${PFSENSETYPE}" != "nanobsd" -a -f /etc/pfSense.obsoletedfiles ]; then
 	for f in $(cat /etc/pfSense.obsoletedfiles); do
 		if [ -n "${f}" -a -f "${f}" ]; then
-			rm -f ${f}
+			rm -f "${f}"
 		elif [ -n "${f}" -a -d "${f}" ]; then
-			rm -rf ${f}
+			rm -rf "${f}"
 		fi
 	done
 fi
+
+# Restore IFS
+IFS=${oIFS}