Coding Standards: Correct WP_PHPMailer::setLanguage() method name case.

PHP function names are not case-sensitive, so this aims to bring consistency with the parent method.

Includes removing a one-time variable.

Follow-up to [27385], [59592].

See #63168.

git-svn-id: https://develop.svn.wordpress.org/trunk@60231 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/class-wp-locale-switcher.php

@@ -287,7 +287,7 @@ private function change_locale( $locale ) {
 		WP_Translation_Controller::get_instance()->set_locale( $locale );
 
 		if ( $phpmailer instanceof WP_PHPMailer ) {
-			$phpmailer->SetLanguage();
+			$phpmailer->setLanguage();
 		}
 
 		/**

src/wp-includes/class-wp-phpmailer.php

@@ -24,7 +24,7 @@ class WP_PHPMailer extends PHPMailer\PHPMailer\PHPMailer {
 	 */
 	public function __construct( $exceptions = false ) {
 		parent::__construct( $exceptions );
-		$this->SetLanguage();
+		$this->setLanguage();
 	}
 
 	/**
@@ -34,8 +34,8 @@ public function __construct( $exceptions = false ) {
 	 *
 	 * @return true Always returns true.
 	 */
-	public function SetLanguage( $langcode = 'en', $lang_path = '' ) {
-		$error_strings  = array(
+	public function setLanguage( $langcode = 'en', $lang_path = '' ) {
+		$this->language = array(
 			'authenticate'         => __( 'SMTP Error: Could not authenticate.' ),
 			'buggy_php'            => sprintf(
 				/* translators: 1: mail.add_x_header. 2: php.ini */
@@ -87,7 +87,7 @@ public function SetLanguage( $langcode = 'en', $lang_path = '' ) {
 			/* translators: There is a space after the colon. */
 			'variable_set'         => __( 'Cannot set or reset variable: ' ),
 		);
-		$this->language = $error_strings;
+
 		return true;
 	}
 }