[DevTools] Fix location.script().sourceURL

third_party/WebKit/Source/devtools/front_end/sources/CallStackSidebarPane.js

Index: third_party/WebKit/Source/devtools/front_end/sources/CallStackSidebarPane.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sources/CallStackSidebarPane.js b/third_party/WebKit/Source/devtools/front_end/sources/CallStackSidebarPane.js
index ab74c7e4a4861e3c6e2d2048c50adb340c51bd0d..a1762546a0166c0be897462d15813305eddd2a23 100644
--- a/third_party/WebKit/Source/devtools/front_end/sources/CallStackSidebarPane.js
+++ b/third_party/WebKit/Source/devtools/front_end/sources/CallStackSidebarPane.js
@@ -447,7 +447,8 @@ WebInspector.CallStackSidebarPane.CallFrame = function(functionName, location, l
     this._asyncCallFrame = asyncCallFrame;
 
     if (asyncCallFrame) {
-        var locationElement = linkifier.linkifyRawLocation(location, location.script().sourceURL);
+        var script = location.script();

[lushnikov, 2016/07/29 23:37:43]

while we're here, let's change the WebInspector.DebuggerModel.Location.script()
method to return nullable script!

This might help us find & fix more bugs.

[kozy, 2016/07/29 23:54:12]

Done.

+        var locationElement = linkifier.linkifyRawLocation(location, script ? script.sourceURL : "");
         this.subtitleElement.appendChild(locationElement);
     } else {
         this._liveLocationPool = new WebInspector.LiveLocationPool();