Fixs the name of the variable in the assertion

Author: dejalatele

ext/dom/tests/DOMNode_insertBefore_error2.phpt

@@ -21,7 +21,7 @@ $parent_node = $dom->getElementsByTagName("book")->item(0);
 assert('!is_null($parent_node)');
 
 $new_node = $dom->createElement('newnode');
-assert('$doc !== false');
+assert('$new_node !== false');
 
 // getting a sibling as reference node to insert
 

ext/dom/tests/DOMNode_insertBefore_error3.phpt

@@ -21,7 +21,7 @@ $parent_node = $dom->getElementsByTagName("book")->item(0);
 assert('!is_null($parent_node)');
 
 $new_node = $dom->createElement('newnode');
-assert('$doc !== false');
+assert('$new_node !== false');
 
 // getting the parent node as reference node to insert
 

ext/dom/tests/DOMNode_insertBefore_error4.phpt

@@ -21,7 +21,7 @@ $parent_node = $dom->getElementsByTagName("book")->item(0);
 assert('!is_null($parent_node)');
 
 $new_node = $dom->createElement('newnode');
-assert('$doc !== false');
+assert('$new_node !== false');
 
 // could be a brand new node
 

ext/dom/tests/DOMNode_insertBefore_error5.phpt

@@ -21,7 +21,7 @@ $parent_node = $dom->getElementsByTagName("book")->item(0);
 assert('!is_null($parent_node)');
 
 $new_node = $dom->createElement('newnode');
-assert('$doc !== false');
+assert('$new_node !== false');
 
 // creating a new node (descendant) and getting it as the refnode
 

ext/dom/tests/DOMNode_insertBefore_error6.phpt

@@ -22,7 +22,7 @@ assert('!is_null($parent_node)');
 $ref_node = $parent_node;
 
 $new_node = $dom->createElement('newnode');
-assert('$doc !== false');
+assert('$new_node !== false');
 
 try {
     $parent_node->insertBefore($new_node, $ref_node);