Index: third_party/WebKit/Source/devtools/front_end/sources/StyleSheetOutlineDialog.js |
diff --git a/third_party/WebKit/Source/devtools/front_end/sources/StyleSheetOutlineDialog.js b/third_party/WebKit/Source/devtools/front_end/sources/StyleSheetOutlineDialog.js |
index c8b9802d5e04ede5bd35c266feb291cf25b978a6..803b6875db246020a02fdfc79d8fb4f8da0bcd39 100644 |
--- a/third_party/WebKit/Source/devtools/front_end/sources/StyleSheetOutlineDialog.js |
+++ b/third_party/WebKit/Source/devtools/front_end/sources/StyleSheetOutlineDialog.js |
@@ -100,10 +100,12 @@ Sources.StyleSheetOutlineDialog = class extends UI.FilteredListWidget.Delegate { |
/** |
* @override |
- * @param {number} itemIndex |
+ * @param {?number} itemIndex |
* @param {string} promptValue |
*/ |
selectItem(itemIndex, promptValue) { |
+ if (itemIndex === null) |
+ return; |
var rule = this._rules[itemIndex]; |
var lineNumber = rule.lineNumber; |
if (!isNaN(lineNumber) && lineNumber >= 0) |