Fix failing tests in Zend\Text\Table

- Due to unvalidated merge -- protected members had their leading
  underscore removed, but a later merge re-added some of them. Fixed.

library/Zend/Text/Table/Table.php

@@ -360,7 +360,7 @@ public function render()
         $totalNumColumns = count($this->columnWidths);
 
         // Check if we have a horizontal character defined
-        $hasHorizontal = $this->_decorator->getHorizontal() !== '';
+        $hasHorizontal = $this->decorator->getHorizontal() !== '';
 
         // Now render all rows, starting from the first one
         $numRows = count($this->rows);