Fix spacing for coding standards

lib/Cake/TestSuite/CakeTestSuite.php

@@ -52,7 +52,7 @@ class CakeTestSuite extends PHPUnit_Framework_TestSuite {
 		$files = $Folder->tree(null, false, 'files');
 
 		foreach ($files as $file) {
-			if (strpos($file, DS.'.') !== false) {
+			if (strpos($file, DS . '.') !== false) {
 				continue;
 			}
 			$this->addTestFile($file);