fix missing processing files bug

https://forums.whonix.org/t/permission-hardening/8655/16

usr/lib/security-misc/permission-hardening

@@ -19,11 +19,32 @@ echo_wrapper() {
 add_nosuid_statoverride_entry() {
   fso_to_process="${fso_without_trailing_slash}/"
   counter=0
+
   while read -r line; do
     true "line: $line"
     counter="$(( counter + 1 ))"
-    if ! read -r file_name existing_mode owner group; then
+
-      echo "ERROR: cannot parse line by 'stat' - line: '$line'" >&2
+    arr=($line)
+
+    file_name="${arr[0]}"
+    existing_mode="${arr[1]}"
+    owner="${arr[2]}"
+    group="${arr[3]}"
+
+    if [ "$file_name" = "" ]; then
+      echo "ERROR: file_name is empty. line: '$line'" >&2
+      continue
+    fi
+    if [ "$existing_mode" = "" ]; then
+      echo "ERROR: existing_mode is empty. line: '$line'" >&2
+      continue
+    fi
+    if [ "owner" = "" ]; then
+      echo "ERROR: $owner is empty. line: '$line'" >&2
+      continue
+    fi
+    if [ "$group" = "" ]; then
+      echo "ERROR: $group is empty. line: '$line'" >&2
       continue
     fi