build: Updating mediawiki/mediawiki-codesniffer to 20.0.0

Change-Id: I4385a05df9b40d4da19f280bd211e8c261d22c41

composer.json

@@ -1,7 +1,7 @@
 {
 	"require-dev": {
 		"jakub-onderka/php-parallel-lint": "1.0.0",
-		"mediawiki/mediawiki-codesniffer": "18.0.0",
+		"mediawiki/mediawiki-codesniffer": "20.0.0",
 		"jakub-onderka/php-console-highlighter": "0.3.2",
 		"mediawiki/minus-x": "0.3.1"
 	},

src/MathHooks.php

@@ -312,7 +312,7 @@ class MathHooks {
 	/**
 	 * LoadExtensionSchemaUpdates handler; set up math table on install/upgrade.
 	 *
-	 * @param DatabaseUpdater $updater
+	 * @param DatabaseUpdater|null $updater
 	 * @throws Exception
 	 * @return bool
 	 */

src/MathInputCheckRestbase.php

@@ -16,7 +16,7 @@ class MathInputCheckRestbase extends MathInputCheck {
 	 * (performs no checking)
 	 * @param string $tex the TeX input string to be checked
 	 * @param string $type
-	 * @param MathRestbaseInterface &$ref
+	 * @param MathRestbaseInterface|null &$ref
 	 */
 	public function __construct( $tex = '', $type = 'tex', &$ref = null ) {
 		parent::__construct( $tex );
@@ -31,7 +31,7 @@ class MathInputCheckRestbase extends MathInputCheck {
 	/**
 	 * @see https://phabricator.wikimedia.org/T119300
 	 * @param stdClass $e
-	 * @param MathRenderer $errorRenderer
+	 * @param MathRenderer|null $errorRenderer
 	 * @return string
 	 */
 	public function errorObjectToHtml( stdClass $e, $errorRenderer = null ) {

src/MathMathMLCli.php

@@ -111,7 +111,7 @@ class MathMathMLCli extends MathMathML {
 
 	/**
 	 * @param mixed $req request
-	 * @param int &$exitCode exit code
+	 * @param int|null &$exitCode exit code
 	 * @return mixed
 	 * @throws MWException
 	 */

src/MathRenderer.php

@@ -329,7 +329,7 @@ abstract class MathRenderer {
 	 * to the database even if they are empty.
 	 *
 	 * This function can be seen as protected function.
-	 * @param \Wikimedia\Rdbms\IDatabase $dbw
+	 * @param \Wikimedia\Rdbms\IDatabase|null $dbw
 	 */
 	public function writeToDatabase( $dbw = null ) {
 		# Now save it back to the DB: