1 files changed, 7 insertions, 1 deletions
diff --git a/src/3rdparty/webkit/WebCore/inspector/JavaScriptCallFrame.h b/src/3rdparty/webkit/WebCore/inspector/JavaScriptCallFrame.h
index e86b0ebd3..47cdac245 100644
--- a/src/3rdparty/webkit/WebCore/inspector/JavaScriptCallFrame.h
+++ b/src/3rdparty/webkit/WebCore/inspector/JavaScriptCallFrame.h
@@ -44,7 +44,12 @@ namespace WebCore {
             return adoptRef(new JavaScriptCallFrame(debuggerCallFrame, caller, sourceID, line));
         }
 
-        void invalidate() { m_isValid = false; }
+        void invalidate()
+        {
+            m_isValid = false;
+            m_debuggerCallFrame = 0;
+        }
+
         bool isValid() const { return m_isValid; }
 
         JavaScriptCallFrame* caller();
@@ -56,6 +61,7 @@ namespace WebCore {
             m_debuggerCallFrame = debuggerCallFrame;
             m_line = line;
             m_sourceID = sourceID;
+            m_isValid = true;
         }
 
         String functionName() const;