Don't run through . and .. in logdirs

pisg.pl

@@ -393,7 +393,7 @@ sub parse_dir
 {
     print "Going into $conf->{logdir} and parsing all files there...\n\n";
     my @filesarray;
-    opendir(LOGDIR, $conf->{logdir}) || die("can't opendir $conf->{logdir}: $!");
+    opendir(LOGDIR, $conf->{logdir}) or die("Can't opendir $conf->{logdir}: $!");
     unless (@filesarray = readdir(LOGDIR)) {
         die("No files in $conf->{logdir}!");
     }
@@ -406,9 +406,11 @@ sub parse_dir
     
     my $parsed = 0;
     foreach my $file (grep /^$conf->{prefix}/, @filesarray) {
-        $file = $conf->{logdir} . $file;
-        parse_file($file);
-        $parsed = 1;
+        unless ($file eq "." or $file eq "..") {
+            $file = $conf->{logdir} . $file;
+            parse_file($file);
+            $parsed = 1;
+        }
     }
 
     die "No files matched prefix $conf->{prefix} in directory $conf->{logdir}" unless ($parsed);