Add out-of-line copy ctor to Maps::Iterator.

maps.cc

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "maps.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <linux/unistd.h>
 #include <signal.h>
@@ skipping 94 matching lines @@
 
 Maps::~Maps() {
 }
 
 Maps::Iterator::Iterator(Maps* maps, bool at_beginning, bool at_end)
     : maps_(maps),
       at_beginning_(at_beginning),
       at_end_(at_end) {
 }
 
+Maps::Iterator::Iterator(const Iterator& other)
+    : iter_(other.iter_),
+      maps_(other.maps_),
+      at_beginning_(other.at_beginning_),
+      at_end_(other.at_end_) {
+}
+
 Maps::LibraryMap::iterator& Maps::Iterator::getIterator() const {
   if (at_beginning_) {
     iter_ = maps_->libs_.begin();
   } else if (at_end_) {
     iter_ = maps_->libs_.end();
   }
   return iter_;
 }
 
 Maps::Iterator Maps::Iterator::begin() {
@@ skipping 137 matching lines @@
         break;
       }
     }
   } while (len || long_line);
   new_addr = NULL;
 done:
   return reinterpret_cast<char*>(new_addr);
 }
 
 } // namespace