use popHTMLStack for same depth and less than depth

index.js

@@ -34,10 +34,7 @@ module.exports = function(input, callback){
 				if(current_line_num_tabs > previous_line_num_tabs){
 					html += insertTabs(current_line_num_tabs * 2) + '<ul>\n';
 					html_stack.push(insertTabs(current_line_num_tabs * 2) + '</ul>\n');
-				} else if (current_line_num_tabs === previous_line_num_tabs) {
+				} else { 
-					html += html_stack.pop();
-				}
-				else if(current_line_num_tabs < previous_line_num_tabs){
 					html += popHTMLStack(current_line_num_tabs, previous_line_num_tabs);
 				}
 				html += insertTabs((current_line_num_tabs * 2) + 1) + '<li>\n';