"NULL !=" = NULL

tools/skpdiff/skpdiff_main.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // TODO(djsollen): Rename this whole package (perhaps to "SkMultiDiffer").
 // It's not just for "pdiff" (perceptual diffs)--it's a harness that allows
 // the execution of an arbitrary set of difference algorithms.
@@ skipping 116 matching lines @@
     // Needed by various Skia components
     SkAutoGraphics ag;
     SkTaskGroup::Enabler enabled;
 
     if (FLAGS_list) {
         SkDebugf("Available Metrics:\n");
     }
 
     // Figure which differs the user chose, and optionally print them if the user requests it
     SkTDArray<SkImageDiffer*> chosenDiffers;
-    for (int differIndex = 0; NULL != gDiffers[differIndex]; differIndex++) {
+    for (int differIndex = 0; gDiffers[differIndex]; differIndex++) {
         SkImageDiffer* differ = gDiffers[differIndex];
         if (FLAGS_list) {
             SkDebugf("    %s", differ->getName());
             SkDebugf("\n");
         }
 
         // Check if this differ was chosen by any of the flags. Initialize them if they were chosen.
         if (FLAGS_differs.isEmpty()) {
             // If no differs were chosen, they all get added
             if (differ->requiresOpenCL()) {
@@ skipping 109 matching lines @@
     }
 
     return 0;
 }
 
 #if !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_NACL)
 int main(int argc, char * argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif