Fix typo with the nonce

Author: rmccue

inc/types/class-base.php

@@ -70,7 +70,7 @@ public function handle_authorisation() {
 
 		// Check nonce.
 		$nonce_action = $this->get_nonce_action( $client );
-		if ( ! wp_verify_nonce( wp_unslash( $_POST['_wpnonce'] ), $none_action ) ) {
+		if ( ! wp_verify_nonce( wp_unslash( $_POST['_wpnonce'] ), $nonce_action ) ) {
 			return new WP_Error(
 				'oauth2.types.authorization_code.handle_authorisation.invalid_nonce',
 				__( 'Invalid nonce.', 'oauth2' )