- Fix comments and formatting.

runtime/vm/hash_set.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_HASH_SET_H_
 #define VM_HASH_SET_H_
 
 #include "vm/allocation.h"
 #include "platform/utils.h"
 
@@ skipping 66 matching lines @@
       ASSERT(hash != Hash(value));
     }
     UNREACHABLE();
   }
 
  private:
   intptr_t Hash(uword value) const {
     return value & size_mask_;
   }
 
-  // Returns true if the given slot contains a value.
+  // Returns true if the given slot does not contain a value.
   bool SlotIsEmpty(intptr_t index) const {
     return keys_[index] == 0;
   }
 
   uword* keys_;
   intptr_t size_mask_;
   intptr_t growth_limit_;
   intptr_t count_;
   intptr_t fill_ratio_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(HashSet);
 };
 
 }  // namespace dart
 
 #endif  // VM_HASH_SET_H_