| Index: Source/core/dom/ExecutionContext.cpp | 
| diff --git a/Source/core/dom/ExecutionContext.cpp b/Source/core/dom/ExecutionContext.cpp | 
| index 4ec9a88c8031b8d3d83268850358998f581dc5d5..162ab793da8ac6ff49de7fd73e78881fbee178d1 100644 | 
| --- a/Source/core/dom/ExecutionContext.cpp | 
| +++ b/Source/core/dom/ExecutionContext.cpp | 
| @@ -72,6 +72,7 @@ ExecutionContext::ExecutionContext() | 
| , m_inDispatchErrorEvent(false) | 
| , m_activeDOMObjectsAreSuspended(false) | 
| , m_activeDOMObjectsAreStopped(false) | 
| +    , m_inBeforeUnloadEvent(false) | 
| { | 
| } | 
|  | 
|  |