php 5.2兼容性bug

tools/Makefile

@@ -107,6 +107,7 @@ test:
 	for i in `find ../var/ -name '*.php'`; do php -l $$i; done;
 	for i in `find ../usr/ -name '*.php'`; do php -l $$i; done;
 	for i in `find ../admin/ -name '*.php'`; do php -l $$i; done;
+	php test.php
 
 
 all:

var/CommonMark/Element/BlockElement.php

@@ -204,7 +204,7 @@ class CommonMark_Element_BlockElement
      */
     public function getParent()
     {
-        return $this->parent ? : null;
+        return $this->parent ? $this->parent : null;
     }
 
     /**

var/CommonMark/InlineParser.php

@@ -242,7 +242,8 @@ class CommonMark_InlineParser
             $this->pos++;
         }
 
-        $charAfter = $this->peek() ? : "\n";
+        $peek = $this->peek();
+        $charAfter = $peek ? $peek : "\n";
 
         $canOpen = $numDelims > 0 && $numDelims <= 3 && !preg_match('/\s/', $charAfter);
         $canClose = $numDelims > 0 && $numDelims <= 3 && !preg_match('/\s/', $charBefore);