Fix Mac build warning (very rightful)

src/liveedit.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1779 matching lines @@
     SetElementNonStrict(result, len, str);
   }
   return result;
 }
 
 
 // Describes a single callframe a target. Not finding this frame
 // means an error.
 class SingleFrameTarget {
  public:
-  explicit SingleFrameTarget(JavaScriptFrame* frame) : m_frame(frame) {}
+  explicit SingleFrameTarget(JavaScriptFrame* frame)
+      : m_frame(frame),
+        m_saved_status(LiveEdit::FUNCTION_AVAILABLE_FOR_PATCH) {}
 
   bool MatchActivation(StackFrame* frame,
       LiveEdit::FunctionPatchabilityStatus status) {
     if (frame->fp() == m_frame->fp()) {
       m_saved_status = status;
       return true;
     }
     return false;
   }
   const char* GetNotFoundMessage() {
@@ skipping 85 matching lines @@
 
 bool LiveEditFunctionTracker::IsActive(Isolate* isolate) {
   return false;
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 
 } }  // namespace v8::internal