[serializer] fixed whitespace issue when decoding xml

Author: fieg

Encoder/XmlEncoder.php

@@ -77,7 +77,7 @@ public function decode($data, $format, array $context = array())
         libxml_clear_errors();
 
         $dom = new \DOMDocument();
-        $dom->loadXML($data, LIBXML_NONET);
+        $dom->loadXML($data, LIBXML_NONET | LIBXML_NOBLANKS);
 
         libxml_use_internal_errors($internalErrors);
         libxml_disable_entity_loader($disableEntities);

Tests/Encoder/XmlEncoderTest.php

@@ -240,6 +240,19 @@ public function testDecodeCdataWrapping()
         $this->assertEquals($expected, $this->encoder->decode($xml, 'xml'));
     }
 
+    public function testDecodeCdataWrappingAndWhitespace()
+    {
+        $expected = array(
+            'firstname' => 'Paul <or Me>',
+        );
+
+        $xml = '<?xml version="1.0"?>'."\n".
+            '<response><firstname>'."\n".
+                '<![CDATA[Paul <or Me>]]></firstname></response>'."\n";
+
+        $this->assertEquals($expected, $this->encoder->decode($xml, 'xml'));
+    }
+
     public function testDecodeScalarWithAttribute()
     {
         $source = '<?xml version="1.0"?>'."\n".