From dd05955a38b34bb2422b2c492e111d999815e2a4 Mon Sep 17 00:00:00 2001
From: tophf <tophf@gmx.com>
Date: Mon, 4 Dec 2017 20:12:47 +0300
Subject: [PATCH] fixup d97337de: preceding comment may be absent

---
 js/moz-parser.js | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/js/moz-parser.js b/js/moz-parser.js
index bf023fdc..1aa2aa47 100644
--- a/js/moz-parser.js
+++ b/js/moz-parser.js
@@ -23,10 +23,11 @@ var mozParser = (() => {
         const section = {code: '', start: {line, col}};
         // move last comment before @-moz-document inside the section
         if (!/\/\*[\s\n]*AGENT_SHEET[\s\n]*\*\//.test(lastCmt)) {
-          section.code = lastCmt + '\n';
-          const indent = outerText.match(/^\s*/)[0];
-          outerText = outerText.slice(0, -lastCmt.length);
-          outerText = indent + outerText.trim();
+          if (lastCmt) {
+            section.code = lastCmt + '\n';
+            outerText = outerText.slice(0, -lastCmt.length);
+          }
+          outerText = outerText.match(/^\s*/)[0] + outerText.trim();
         }
         if (outerText.trim()) {
           lastSection.code = outerText;