[Plugin: Lazy Load] Bug in lazyload_images_add_placeholders??

I used the following function to include my own images:

if ( function_exists( 'lazyload_images_add_placeholders' ) )
    $content = lazyload_images_add_placeholders( $content );

After that line of code, $content was empty. My opinion is that the following function is wrong:

function lazyload_images_add_placeholders( $content ) {
      LazyLoad_Images::add_image_placeholders( $content );
}

I changed it the following way and now it works perfectly:

function lazyload_images_add_placeholders( $content ) {
      return LazyLoad_Images::add_image_placeholders( $content );
}

http://wordpress.org/extend/plugins/lazy-load/