WordPress Theme Raindrops 1.008 has bug Please replace raindrops_small_device_helper function

gistfile1.txt

/*
 * Raindrops 1.008 can not remove custom header image.
 *
 * WordPress Theme Raindrops 1.008 has bug Please replace raindrops_small_device_helper function
 * functions.php
 */


    if ( ! function_exists( 'raindrops_small_device_helper' ) ) {
        function raindrops_small_device_helper(){
            global $is_IE, $raindrops_fluid_maximum_width;

           // $raindrops_header_image_uri   = get_header_image();
            $raindrops_header_image             = get_custom_header();
            $raindrops_header_image_uri         = $raindrops_header_image -> url;
			if( empty( $raindrops_header_image_uri ) ){
			/* when restore image $raindrops_header_image -> url is empty */
				$raindrops_header_image_uri     = get_header_image();
			}
            $raindrops_header_image_width       = $raindrops_header_image -> width;
            $raindrops_header_image_height      = $raindrops_header_image -> height;
        ?>
            <script type="text/javascript">
            (function(){
            jQuery(function(){
                var width = jQuery('div#header-image').width();
                function raindrops_resizes(){
                    var image_exists = '<?php echo $raindrops_header_image_uri;?>';
                var width = jQuery('div#header-image').width();
                var window_width = jQuery(window).width();
			<?php
			$raindrops_restore_check = get_theme_mod( 'header_image', get_theme_support( 'custom-header', 'default-image' ) );			
			if(  $raindrops_restore_check !== 'remove-header'  ){
                  $ratio = $raindrops_header_image_height / $raindrops_header_image_width;
            ?>
                var ratio = <?php echo $ratio;?>;
                var height = width * ratio;
				
				jQuery('#header-image').removeAttr('style').css({'background-image':'url('+ image_exists + ')','height': height, 'background-size': 'cover'});
    <?php //remove header 
	
             }
        /**
         * Check window size and mouse position
         * Controll childlen menu show right or left side.
         *
         *
         *
         */
         ?>
                 if ( jQuery('body > div').is('#doc3') ) {
                        jQuery("#access").mousemove(function(e){
                            var menu_item_position = e.pageX ;

                        if( window_width - 200 < menu_item_position){
                                jQuery('#access ul ul ul').addClass('left');
                            }else if( window_width / 2 >  menu_item_position){
                                jQuery('#access ul ul ul').removeClass('left');
                            }
                        });
                        if( window_width > <?php echo $raindrops_fluid_maximum_width;?>){
                            //centering page when browser width > $raindrops_fluid_maximun_width
                            jQuery('#doc3').css({'margin':'auto'});
                        }
                    }
                }
                raindrops_resizes();
                jQuery(window).resize( function () {raindrops_resizes()});
                });
            })(jQuery);
            </script>
            <?php
        }
    }

restore image submit then can not show default image.

reason $raindrops_header_image -> url return empty string.

if( get_header_image() !== false) check works improperly.

then change code.

$raindrops_restore_check = get_theme_mod( 'header_image', get_theme_support( 'custom-header', 'default-image' ) );
if( $raindrops_restore_check !== 'remove-header' ){ ....