Trying to check whether it is defined instead.

svn path=/trunk/; revision=14945

tools/WebBuild/FormValidation.pm

@@ -40,7 +40,7 @@ sub add_to_error_stack {
   my $new_error = @_;
   return unless defined $new_error;
 
-  unless ($self->errors) {
+  unless (defined $self->errors) {
     $self->errors = "<p>Errors occurred when attempting to process form.</p>";
     $self->errors .= "<ul>";
   }