Coding Standards: Remove unused return value for `WP_Object_Cache::__set()`.

This resolves a WPCS warning:
{{{
Assignments must be the first block of code on a line
}}}

Note: This is enforced by PHPCS 3.10.3.

Follow-up to [28521], [29146].

Props jrf.
See #62076, #61607.
Built from https://develop.svn.wordpress.org/trunk@59066


git-svn-id: http://core.svn.wordpress.org/trunk@58462 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-object-cache.php

@@ -101,10 +101,9 @@ class WP_Object_Cache {
 	 *
 	 * @param string $name  Property to set.
 	 * @param mixed  $value Property value.
-	 * @return mixed Newly-set property.
 	 */
 	public function __set( $name, $value ) {
-		return $this->$name = $value;
+		$this->$name = $value;
 	}
 
 	/**

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-alpha-59065';
+$wp_version = '6.7-alpha-59066';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.