Refactor check in debian bootstrap

debian/bootstrap.sh

@@ -146,7 +146,7 @@ mod_filter_show () {
 map_fs_modules () {
   local filterfn="$1" percatfns="$2" permodfns="$3"
   for x in $mod_dir/*; do
-    if test -d $x; then
+    test -d $x || continue
     category=${x##*/} category_path=$x
     for f in $percatfns; do $f; done
     for y in $x/*; do
@@ -159,7 +159,6 @@ map_fs_modules () {
       unset module_name module_path module
     done
     unset category category_path
-    fi
   done
 }