Small fixes for the last commit

Author: ivanlanin

src/PhpWord/Reader/ODText/AbstractPart.php

@@ -84,4 +84,16 @@ protected function readFontStyle(XMLReader $xmlReader, \DOMElement $domNode)
     protected function readTableStyle(XMLReader $xmlReader, \DOMElement $domNode)
     {
     }
+
+    /**
+     * Read style definition (override)
+     *
+     * @param \PhpOffice\PhpWord\Shared\XMLReader $xmlReader
+     * @param \DOMElement $parentNode
+     * @param array $styleDefs
+     * @return array
+     */
+    protected function readStyleDefs(XMLReader $xmlReader, \DOMElement $parentNode = null, $styleDefs = array())
+    {
+    }
 }

src/PhpWord/Reader/Word2007/AbstractPart.php

@@ -391,6 +391,7 @@ protected function readTableStyle(XMLReader $xmlReader, \DOMElement $domNode)
                 $style = $xmlReader->getAttribute('w:val', $domNode, 'w:tblPr/w:tblStyle');
             } else {
                 $styleNode = $xmlReader->getElement('w:tblPr', $domNode);
+                $styleDefs = array();
                 // $styleDefs['styleName'] = array(self::READ_VALUE, 'w:tblStyle');
                 foreach ($margins as $side) {
                     $ucfSide = ucfirst($side);
@@ -432,11 +433,11 @@ private function readCellStyle(XMLReader $xmlReader, \DOMElement $domNode)
      * Read style definition
      *
      * @param \PhpOffice\PhpWord\Shared\XMLReader $xmlReader
-     * @param \DOMElement $domNode
+     * @param \DOMElement $parentNode
      * @param array $styleDefs
      * @return array
      */
-    protected function readStyleDefs(XMLReader $xmlReader, \DOMElement $parentNode, $styleDefs)
+    protected function readStyleDefs(XMLReader $xmlReader, \DOMElement $parentNode = null, $styleDefs = array())
     {
         $styles = array();