release: v3.9.2

### Bug Fixes
- **Fatal error**: In some edge-cases, the Hero Preloader feature was throwing a fatal error, trying to access inexistent posts.
- **Lazyload default status**: Lazyload was off for new users by default when it should have been on.

inc/admin.php

@@ -104,6 +104,7 @@ public function update_default_settings() {
 		}
 
 		$this->settings->update( 'limit_dimensions', 'enabled' );
+		$this->settings->update( 'lazyload', 'enabled' );
 
 		update_option( self::NEW_USER_DEFAULTS_UPDATED, 'yes' );
 	}

inc/hero_preloader.php

@@ -140,7 +140,7 @@ public function add_preload_to_image_attributes( $attr, $attachment ) {
 
 		if ( is_singular() && $queried_post instanceof WP_Post ) {
 			$post = $queried_post;
-		} elseif ( $wp_query->is_main_query() && isset( $wp_query->posts[0] ) ) {
+		} elseif ( $wp_query->is_main_query() && $wp_query->post_count > 0 && isset( $wp_query->posts[0] ) ) {
 			$post = $wp_query->posts[0];
 		}
 

inc/main.php

@@ -92,7 +92,6 @@ public static function instance() {
 			add_filter( 'optimole_wp_uninstall_feedback_after_css', [ __CLASS__, 'adds_uf_css' ] );
 			add_filter( 'optimole_wp_feedback_review_message', [ __CLASS__, 'change_review_message' ] );
 			add_filter( 'optimole_wp_logger_heading', [ __CLASS__, 'change_review_message' ] );
-			add_filter( 'optml_default_settings', [ __CLASS__, 'change_lazyload_default' ] );
 			add_filter( 'optml_register_conflicts', [ __CLASS__, 'register_conflicts' ] );
 			self::$_instance          = new self();
 			self::$_instance->manager = Optml_Manager::instance();
@@ -136,25 +135,6 @@ public static function register_conflicts( $conflicts_to_register = [] ) {
 		return $conflicts_to_register;
 	}
 
-	/**
-	 * Change lazyload default for new users.
-	 *
-	 * @param array $defaults Old defaults.
-	 *
-	 * @return array New defaults.
-	 */
-	public static function change_lazyload_default( $defaults ) {
-		$install_time = get_option( 'optimole_wp_install', 0 );
-
-		if ( $install_time < 1545652321 ) {
-			return $defaults;
-		}
-
-		$defaults['lazyload'] = 'enabled';
-
-		return $defaults;
-	}
-
 	/**
 	 * Change review message.
 	 *