Fix SkIStream nits.

src/utils/win/SkIStream.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #define WIN32_LEAN_AND_MEAN
@@ skipping 95 matching lines @@
 SkIStream::SkIStream(SkStream* stream, bool deleteOnRelease)
     : SkBaseIStream()
     , fSkStream(stream)
     , fDeleteOnRelease(deleteOnRelease)
     , fLocation()
 {
     this->fSkStream->rewind();
 }
 
 SkIStream::~SkIStream() {
-    if (this->fSkStream && fDeleteOnRelease) {
+    if (fDeleteOnRelease) {
         delete this->fSkStream;
     }
 }
 
 HRESULT SkIStream::CreateFromSkStream(SkStream* stream
                                     , bool deleteOnRelease
                                     , IStream ** ppStream)
 {
     if (NULL == stream) {
         return E_INVALIDARG;
@@ skipping 141 matching lines @@
     if (0 == (grfStatFlag & STATFLAG_NONAME)) {
         return STG_E_INVALIDFLAG;
     }
     pStatstg->pwcsName = NULL;
     pStatstg->cbSize.QuadPart = 0;
     pStatstg->clsid = CLSID_NULL;
     pStatstg->type = STGTY_STREAM;
     pStatstg->grfMode = STGM_WRITE;
     return S_OK;
 }