"NULL !=" = NULL

src/images/SkImageDecoder_libpng.cpp

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkImageDecoder.h"
 #include "SkImageEncoder.h"
 #include "SkColor.h"
@@ skipping 44 matching lines @@
 public:
     SkPNGImageIndex(SkStreamRewindable* stream, png_structp png_ptr, png_infop info_ptr)
         : fStream(stream)
         , fPng_ptr(png_ptr)
         , fInfo_ptr(info_ptr)
         , fColorType(kUnknown_SkColorType) {
         SkASSERT(stream != NULL);
         stream->ref();
     }
     ~SkPNGImageIndex() {
-        if (NULL != fPng_ptr) {
+        if (fPng_ptr) {
             png_destroy_read_struct(&fPng_ptr, &fInfo_ptr, png_infopp_NULL);
         }
     }
 
     SkAutoTUnref<SkStreamRewindable>    fStream;
     png_structp                         fPng_ptr;
     png_infop                           fInfo_ptr;
     SkColorType                         fColorType;
 };
 
@@ skipping 1078 matching lines @@
     }
 
     SkAutoLockPixels alp(bitmap);
     // readyToDraw checks for pixels (and colortable if that is required)
     if (!bitmap.readyToDraw()) {
         return false;
     }
 
     // we must do this after we have locked the pixels
     SkColorTable* ctable = bitmap.getColorTable();
-    if (NULL != ctable) {
+    if (ctable) {
         if (ctable->count() == 0) {
             return false;
         }
         // check if we can store in fewer than 8 bits
         bitDepth = computeBitDepth(ctable->count());
     }
 
     return doEncode(stream, bitmap, hasAlpha, colorType, bitDepth, ct, sig_bit);
 }
 
@@ skipping 103 matching lines @@
     return SkImageDecoder::kUnknown_Format;
 }
 
 SkImageEncoder* sk_libpng_efactory(SkImageEncoder::Type t) {
     return (SkImageEncoder::kPNG_Type == t) ? SkNEW(SkPNGImageEncoder) : NULL;
 }
 
 static SkImageDecoder_DecodeReg gDReg(sk_libpng_dfactory);
 static SkImageDecoder_FormatReg gFormatReg(get_format_png);
 static SkImageEncoder_EncodeReg gEReg(sk_libpng_efactory);