Fixed regexp zone issue

src/zone-inl.h

Index: src/zone-inl.h
diff --git a/src/zone-inl.h b/src/zone-inl.h
index 6e64c42cc2ae7e883e2ec16a3a58b05043d66b2f..fd66b643f673303e755009905203656a9fdbedfc 100644
--- a/src/zone-inl.h
+++ b/src/zone-inl.h
@@ -29,12 +29,14 @@
 #define V8_ZONE_INL_H_
 
 #include "zone.h"
+#include "v8-counters.h"
 
 namespace v8 { namespace internal {
 
 
 inline void* Zone::New(int size) {
   ASSERT(AssertNoZoneAllocation::allow_allocation());
+  ASSERT(ZoneScope::nesting() > 0);
   // Round up the requested size to fit the alignment.
   size = RoundUp(size, kAlignment);
 
@@ -53,6 +55,12 @@ bool Zone::excess_allocation() {
 }
 
 
+void Zone::adjust_segment_bytes_allocated(int delta) {
+  segment_bytes_allocated_ += delta;
+  Counters::zone_segment_bytes.Set(segment_bytes_allocated_);
+}
+
+
 } }  // namespace v8::internal
 
 #endif  // V8_ZONE_INL_H_