--- a/js/xpconnect/loader/ChromeScriptLoader.cpp
+++ b/js/xpconnect/loader/ChromeScriptLoader.cpp
@@ -306,16 +306,17 @@ PrecompiledScript::ExecuteInGlobal(JSCon
 {
     {
         RootedObject targetObj(aCx, JS_FindCompilationScope(aCx, aGlobal));
         JSAutoCompartment ac(aCx, targetObj);
 
         Rooted<JSScript*> script(aCx, mScript);
         if (!JS::CloneAndExecuteScript(aCx, script, aRval)) {
             aRv.NoteJSContextException(aCx);
+            return;
         }
     }
 
     JS_WrapValue(aCx, aRval);
 }
 
 void
 PrecompiledScript::GetUrl(nsAString& aUrl)