Fix typo in grokdump.

tools/grokdump.py

 #!/usr/bin/env python
 #
 # Copyright 2012 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
@@ skipping 1403 matching lines @@
       offset = self.GetPageOffset(tagged_address)
       lookup_key = (self.ContainingKnownOldSpaceName(tagged_address), offset)
       known_obj_name = KNOWN_OBJECTS.get(lookup_key)
       if known_obj_name:
         return KnownObject(self, known_obj_name)
     if self.IsInKnownMapSpace(tagged_address):
       known_map = self.SenseMap(tagged_address)
       if known_map:
         return known_map
     found_obj = self.heap.FindObject(tagged_address)
-    if found_obj: return found_ob
+    if found_obj: return found_obj
     address = tagged_address - 1
     if self.reader.IsValidAddress(address):
       map_tagged_address = self.reader.ReadUIntPtr(address)
       map = self.SenseMap(map_tagged_address)
       if map is None: return None
       instance_type_name = INSTANCE_TYPES.get(map.instance_type)
       if instance_type_name is None: return None
       cls = V8Heap.CLASS_MAP.get(instance_type_name, HeapObject)
       return cls(self, map, address)
     return None
@@ skipping 263 matching lines @@
   parser = optparse.OptionParser(USAGE)
   parser.add_option("-s", "--shell", dest="shell", action="store_true",
                     help="start an interactive inspector shell")
   parser.add_option("-f", "--full", dest="full", action="store_true",
                     help="dump all information contained in the minidump")
   options, args = parser.parse_args()
   if len(args) != 1:
     parser.print_help()
     sys.exit(1)
   AnalyzeMinidump(options, args[0])