Add clean_path back, it got dropped when clean_fieldname was added

This allows you to tidy up your munin dir stats

plugins/disk/du-2

@@ -91,6 +91,7 @@ if( (defined $ARGV[0]) && ($ARGV[0] eq "config") ) {
     while(defined (my $bar = <FILE>)) {
         if ($bar =~ m/(\d+)\s+(.+)/) {
             my $dir = $2;
+            clean_path(\$dir);
             my $clean_dir = clean_fieldname($dir);
             print "$clean_dir.label $dir\n";
             if ($foo++) {
@@ -110,6 +111,7 @@ open (FILE, "<", $CACHEFILE) or munin_exit_fail();
 while(defined (my $foo = <FILE>)) {
     if ($foo =~ m/(\d+)\s+(.+)/) {
         my ($field, $value) = ($2, $1);
+        clean_path(\$field);
         print clean_fieldname($field), ".value ", $value, "\n";
     }
 }