Fix a grammatical error in crypto/openssl_util.h

crypto/openssl_util.h

 // Copyright (c) 2011 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.
 
 #ifndef CRYPTO_OPENSSL_UTIL_H_
 #define CRYPTO_OPENSSL_UTIL_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/location.h"
@@ skipping 47 matching lines @@
       memcpy(output_, min_sized_buffer_, output_len_);
     }
     // else... any writing already happened directly into |output_|.
   }
 
   unsigned char* safe_buffer() {
     return output_len_ < MIN_SIZE ? min_sized_buffer_ : output_;
   }
 
  private:
-  // Pointer to the caller's data area and it's associated size, where data
+  // Pointer to the caller's data area and its associated size, where data
   // written via safe_buffer() will [eventually] end up.
   unsigned char* output_;
   size_t output_len_;
 
   // Temporary buffer writen into in the case where the caller's
   // buffer is not of sufficient size.
   unsigned char min_sized_buffer_[MIN_SIZE];
 
   DISALLOW_COPY_AND_ASSIGN(ScopedOpenSSLSafeSizeBuffer);
 };
@@ skipping 26 matching lines @@
 
  private:
   const tracked_objects::Location location_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(OpenSSLErrStackTracer);
 };
 
 }  // namespace crypto
 
 #endif  // CRYPTO_OPENSSL_UTIL_H_