Leaving table head blank displays empty table header - not as described

The module states that leaving the first row of the table blank will stop the table from printing the header. This is untrue and the header is still printed but with blank cells. This is bad markup.

Solution:
At line 198 of tablefield.module change the code from:

 // Pull the header for theming
      $header = array_shift($tabledata);

      // Theme the table for display
      $element[$delta]['#markup'] = theme('tablefield_view', array('header' => $header, 'rows' => $tabledata, 'delta' => $delta));

to:

 // Pull the header for theming
      $header = array_shift($tabledata);
      if ((!empty ($header['0']['data'])) || (!empty ($header['1']['data']))) {
        $element[$delta]['#markup'] = theme('tablefield_view', array('header' => $header, 'rows' => $tabledata, 'delta' => $delta));
      } else {
        $element[$delta]['#markup'] = theme('tablefield_view', array('header' => NULL, 'rows' => $tabledata, 'delta' => $delta));
      }

This checks if the first two cells are empty and if so sets the table header to NULL.