Set back libxml settings after testings.

Author: SpacePossum

Tests/Util/XmlUtilsTest.php

@@ -63,11 +63,14 @@ public function testLoadFile()
 
     public function testLoadFileWithInternalErrorsEnabled()
     {
-        libxml_use_internal_errors(true);
+        $internalErrors = libxml_use_internal_errors(true);
 
         $this->assertSame(array(), libxml_get_errors());
         $this->assertInstanceOf('DOMDocument', XmlUtils::loadFile(__DIR__.'/../Fixtures/Util/invalid_schema.xml'));
         $this->assertSame(array(), libxml_get_errors());
+
+        libxml_clear_errors();
+        libxml_use_internal_errors($internalErrors);
     }
 
     /**
@@ -144,7 +147,7 @@ public function getDataForPhpize()
     public function testLoadEmptyXmlFile()
     {
         $file = __DIR__.'/../Fixtures/foo.xml';
-        $this->setExpectedException('InvalidArgumentException', 'File '.$file.' does not contain valid XML, it is empty.');
+        $this->setExpectedException('InvalidArgumentException', sprintf('File %s does not contain valid XML, it is empty.', $file));
         XmlUtils::loadFile($file);
     }