remove most Isolate::Current asserts

src/regexp-stack.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 21 matching lines @@
 namespace internal {
 
 RegExpStackScope::RegExpStackScope(Isolate* isolate)
     : regexp_stack_(isolate->regexp_stack()) {
   // Initialize, if not already initialized.
   regexp_stack_->EnsureCapacity(0);
 }
 
 
 RegExpStackScope::~RegExpStackScope() {
-  ASSERT(Isolate::Current() == regexp_stack_->isolate_);
   // Reset the buffer if it has grown.
   regexp_stack_->Reset();
 }
 
 
 RegExpStack::RegExpStack()
     : isolate_(NULL) {
 }
 
 
@@ skipping 49 matching lines @@
     }
     thread_local_.memory_ = new_memory;
     thread_local_.memory_size_ = size;
     thread_local_.limit_ = new_memory + kStackLimitSlack * kPointerSize;
   }
   return thread_local_.memory_ + thread_local_.memory_size_;
 }
 
 
 }}  // namespace v8::internal