Feedback vector: ASAN found memory leaks during AST Numbering pass.

src/ast-numbering.cc

Index: src/ast-numbering.cc
diff --git a/src/ast-numbering.cc b/src/ast-numbering.cc
index eaaaf29596f6f17d5fc4e39164b4c2d33b1a44a7..f63919c05802f6e43b93587b7475f8734eb30feb 100644
--- a/src/ast-numbering.cc
+++ b/src/ast-numbering.cc
@@ -17,6 +17,7 @@ class AstNumberingVisitor FINAL : public AstVisitor {
   explicit AstNumberingVisitor(Isolate* isolate, Zone* zone)
       : AstVisitor(),
         next_id_(BailoutId::FirstUsable().ToInt()),
+        properties_(zone),
         ic_slot_cache_(FLAG_vector_ics ? 4 : 0),
         dont_optimize_reason_(kNoReason) {
     InitializeAstVisitor(isolate, zone);