[debug] fix return position computation for liveedit.

src/debug/debug.cc

Index: src/debug/debug.cc
diff --git a/src/debug/debug.cc b/src/debug/debug.cc
index d68ca6bbf92b3bc7e3047826b1d1a98fbeaf1b96..8451ed595d2a40c855c16fa2f0ca3f0c4c512f82 100644
--- a/src/debug/debug.cc
+++ b/src/debug/debug.cc
@@ -67,7 +67,6 @@ BreakLocation::BreakLocation(Handle<DebugInfo> debug_info, DebugBreakType type,
       type_(type),
       position_(position),
       statement_position_(statement_position) {
-#ifdef DEBUG
   if (type == DEBUG_BREAK_SLOT_AT_RETURN) {
     int return_position = 0;
     SharedFunctionInfo* shared = debug_info->shared();
@@ -75,10 +74,10 @@ BreakLocation::BreakLocation(Handle<DebugInfo> debug_info, DebugBreakType type,
       return_position =
           std::max(shared->end_position() - shared->start_position() - 1, 0);
     }
-    CHECK_EQ(return_position, position);
-    CHECK_EQ(return_position, statement_position);
+    // TODO(yangguo): find out why return position is wrong for liveedit.
+    position_ = return_position;
+    statement_position = return_position;
   }
-#endif  // DEBUG
 }
 
 BreakLocation::Iterator* BreakLocation::GetIterator(