Add missing call to VerifiedMemory::Accept when initializing Smi field.

runtime/vm/raw_object.h

Index: runtime/vm/raw_object.h
===================================================================
--- runtime/vm/raw_object.h	(revision 43504)
+++ runtime/vm/raw_object.h	(working copy)
@@ -521,6 +521,8 @@
   void InitializeSmi(RawSmi* const* addr, RawSmi* value) {
     // Can't use Contains, as array length is initialized through this method.
     ASSERT(reinterpret_cast<uword>(addr) >= RawObject::ToAddr(this));
+    // This is an initializing store, so any previous content is OK.
+    VerifiedMemory::Accept(reinterpret_cast<uword>(addr), kWordSize);
     VerifiedMemory::Write(const_cast<RawSmi**>(addr), value);
   }