Fix testcase.

tests/TestCase/Utility/DebuggerTest.php

@@ -323,7 +323,6 @@ public function testExportVar() {
 	layout => 'default'
 	layoutPath => null
 	autoLayout => true
-	ext => '.ctp'
 	subDir => null
 	theme => null
 	cacheAction => false
@@ -339,21 +338,21 @@ public function testExportVar() {
 	Form => object(Cake\View\Helper\FormHelper) {}
 	int => (int) 2
 	float => (float) 1.333
+	[protected] _ext => '.ctp'
 	[protected] _passedVars => array(
 		(int) 0 => 'viewVars',
 		(int) 1 => 'autoLayout',
-		(int) 2 => 'ext',
-		(int) 3 => 'helpers',
-		(int) 4 => 'view',
-		(int) 5 => 'layout',
-		(int) 6 => 'name',
-		(int) 7 => 'theme',
-		(int) 8 => 'layoutPath',
-		(int) 9 => 'viewPath',
-		(int) 10 => 'request',
-		(int) 11 => 'plugin',
-		(int) 12 => 'passedArgs',
-		(int) 13 => 'cacheAction'
+		(int) 2 => 'helpers',
+		(int) 3 => 'view',
+		(int) 4 => 'layout',
+		(int) 5 => 'name',
+		(int) 6 => 'theme',
+		(int) 7 => 'layoutPath',
+		(int) 8 => 'viewPath',
+		(int) 9 => 'request',
+		(int) 10 => 'plugin',
+		(int) 11 => 'passedArgs',
+		(int) 12 => 'cacheAction'
 	)
 	[protected] _scripts => array()
 	[protected] _paths => array()