Do not call memset() to initialize StubCache.

src/stub-cache.cc

Index: src/stub-cache.cc
diff --git a/src/stub-cache.cc b/src/stub-cache.cc
index 4bbfe176875852072578e068ef96663b56a4ce83..f50c47432aa381541739885e1218188111b0781e 100644
--- a/src/stub-cache.cc
+++ b/src/stub-cache.cc
@@ -45,8 +45,6 @@ namespace internal {
 
 StubCache::StubCache(Isolate* isolate) : isolate_(isolate) {
   ASSERT(isolate == Isolate::Current());
-  memset(primary_, 0, sizeof(primary_[0]) * StubCache::kPrimaryTableSize);

[ulan, 2012/02/27 12:24:20]

It should be save to remove the memsets, because the isolate calls
StubCache::Initialize() shortly after constructing the stub cache.

-  memset(secondary_, 0, sizeof(secondary_[0]) * StubCache::kSecondaryTableSize);
 }