Fix invalid use of int in Zone.

src/compiler/node-cache.cc

Index: src/compiler/node-cache.cc
diff --git a/src/compiler/node-cache.cc b/src/compiler/node-cache.cc
index 92a3fa078f38abf78a1f4c0b875dcae7ca406b4c..79c342b44e9b256f38d2e2cecb89692334fd3c7e 100644
--- a/src/compiler/node-cache.cc
+++ b/src/compiler/node-cache.cc
@@ -36,7 +36,7 @@ bool NodeCache<Key, Hash, Pred>::Resize(Zone* zone) {
   size_t old_size = size_ + kLinearProbe;
   size_ *= 4;
   size_t num_entries = size_ + kLinearProbe;
-  entries_ = zone->NewArray<Entry>(static_cast<int>(num_entries));
+  entries_ = zone->NewArray<Entry>(num_entries);
   memset(entries_, 0, sizeof(Entry) * num_entries);
 
   // Insert the old entries into the new block.
@@ -66,7 +66,7 @@ Node** NodeCache<Key, Hash, Pred>::Find(Zone* zone, Key key) {
   if (!entries_) {
     // Allocate the initial entries and insert the first entry.
     size_t num_entries = kInitialSize + kLinearProbe;
-    entries_ = zone->NewArray<Entry>(static_cast<int>(num_entries));
+    entries_ = zone->NewArray<Entry>(num_entries);
     size_ = kInitialSize;
     memset(entries_, 0, sizeof(Entry) * num_entries);
     Entry* entry = &entries_[hash & (kInitialSize - 1)];