Index: trunk/tools/czartool/CzarDb.pm
===================================================================
--- trunk/tools/czartool/CzarDb.pm	(revision 28869)
+++ trunk/tools/czartool/CzarDb.pm	(revision 28921)
@@ -16,5 +16,5 @@
 
     # Call the constructor of the parent class, Person.
-    my $self = $class->SUPER::new( $_[1], $_[2], $_[3], $_[4],  $_[5], $_[6]);
+    my $self = $class->SUPER::new($_[1], $_[2], $_[3], $_[4],  $_[5], $_[6]);
 
     bless $self, $class;
@@ -237,9 +237,9 @@
     if (!$query->execute) {return undef;}
 
-    my $minProcessed;
+    my $minProcessed = undef;
 
     ($minProcessed, ${$maxY}, ${$minY}, ${$maxX}, ${$minX}, ${$timeDiff}) = $query->fetchrow_array();
 
-    if (!$minProcessed) {return undef;}
+    if (!defined $minProcessed) {return undef;}
 
     $query = $self->{_db}->prepare(<<SQL);