patch.diff

diff --git a/browser/devtools/debugger/test/head.js b/browser/devtools/debugger/test/head.js
index 1c97620..5dd4070 100644
--- a/browser/devtools/debugger/test/head.js
+++ b/browser/devtools/debugger/test/head.js
@@ -734,17 +734,24 @@ function closeDebuggerAndFinish(aPanel, aFlags = {}) {
               "unless you're absolutely sure about what you're doing.");
   }
   return teardown(aPanel, aFlags).then(finish);
 }
 
 function resumeDebuggerThenCloseAndFinish(aPanel, aFlags = {}) {
   let deferred = promise.defer();
   let thread = aPanel.panelWin.gThreadClient;
-  thread.resume(() => closeDebuggerAndFinish(aPanel, aFlags).then(deferred.resolve));
+  thread.resume(({ error, message }) => {
+    if (error) {
+      DevToolsUtils.reportException("resumeDebuggerThenCloseAndFinish", error + ": " + message);
+      return;
+    }
+
+    closeDebuggerAndFinish(aPanel, aFlags).then(deferred.resolve)
+  });
   return deferred.promise;
 }
 
 // Blackboxing helpers
 
 function getBlackBoxButton(aPanel) {
   return aPanel.panelWin.document.getElementById("black-box");
 }