From 80abe5b30bd78098498692745f376d0f2f4dfb2e Mon Sep 17 00:00:00 2001 From: janekptacijarabaci Date: Sun, 13 May 2018 08:29:42 +0200 Subject: [PATCH] about:welcomeback - fix an error "invalid 'in' operand gTreeData[idx]" in aboutSessionRestore.js --- .../components/sessionstore/content/aboutSessionRestore.js | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/browser/components/sessionstore/content/aboutSessionRestore.js b/browser/components/sessionstore/content/aboutSessionRestore.js index 165f480411..8f265235d7 100644 --- a/browser/components/sessionstore/content/aboutSessionRestore.js +++ b/browser/components/sessionstore/content/aboutSessionRestore.js @@ -289,7 +289,9 @@ var treeView = { get rowCount() { return gTreeData.length; }, setTree: function(treeBox) { this.treeBox = treeBox; }, getCellText: function(idx, column) { return gTreeData[idx].label; }, - isContainer: function(idx) { return "open" in gTreeData[idx]; }, + isContainer: function(idx) { + return gTreeData[idx] ? "open" in gTreeData[idx] : false; + }, getCellValue: function(idx, column){ return gTreeData[idx].checked; }, isContainerOpen: function(idx) { return gTreeData[idx].open; }, isContainerEmpty: function(idx) { return false; },