"NULL !=" = NULL

R=reed@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/544233002
diff --git a/src/utils/win/SkIStream.cpp b/src/utils/win/SkIStream.cpp
index 74d814c..6274e71 100644
--- a/src/utils/win/SkIStream.cpp
+++ b/src/utils/win/SkIStream.cpp
@@ -113,7 +113,7 @@
 }
 
 SkIStream::~SkIStream() {
-    if (NULL != this->fSkStream && fUnrefOnRelease) {
+    if (this->fSkStream && fUnrefOnRelease) {
         this->fSkStream->unref();
     }
 }
@@ -196,7 +196,7 @@
         break;
     }
 
-    if (NULL != lpNewFilePointer) {
+    if (lpNewFilePointer) {
         lpNewFilePointer->QuadPart = this->fLocation.QuadPart;
     }
     return hr;
@@ -228,7 +228,7 @@
 { }
 
 SkWIStream::~SkWIStream() {
-    if (NULL != this->fSkWStream) {
+    if (this->fSkWStream) {
         this->fSkWStream->flush();
     }
 }