Get rid of most instance of 'foo != NULL'

fpdfsdk/src/pdfwindow/PWL_Icon.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "fpdfsdk/include/pdfwindow/PDFWindow.h"
 #include "fpdfsdk/include/pdfwindow/PWL_Icon.h"
 #include "fpdfsdk/include/pdfwindow/PWL_Utils.h"
 #include "fpdfsdk/include/pdfwindow/PWL_Wnd.h"
@@ skipping 119 matching lines @@
   return FALSE;
 }
 
 void CPWL_Icon::GetIconPosition(FX_FLOAT& fLeft, FX_FLOAT& fBottom) {
   if (m_pIconFit) {
     // m_pIconFit->GetIconPosition(fLeft,fBottom);
     fLeft = 0.0f;
     fBottom = 0.0f;
     CPDF_Array* pA =
         m_pIconFit->m_pDict ? m_pIconFit->m_pDict->GetArray("A") : NULL;
-    if (pA != NULL) {
+    if (pA) {
       FX_DWORD dwCount = pA->GetCount();
       if (dwCount > 0)
         fLeft = pA->GetNumber(0);
       if (dwCount > 1)
         fBottom = pA->GetNumber(1);
     }
   } else {
     fLeft = 0.0f;
     fBottom = 0.0f;
   }
@@ skipping 70 matching lines @@
   FX_FLOAT fImageFactHeight = fImageHeight * fVScale;
 
   FX_FLOAT fPlateWidth, fPlateHeight;
   CPDF_Rect rcPlate = GetClientRect();
   fPlateWidth = rcPlate.right - rcPlate.left;
   fPlateHeight = rcPlate.top - rcPlate.bottom;
 
   x = (fPlateWidth - fImageFactWidth) * fLeft;
   y = (fPlateHeight - fImageFactHeight) * fBottom;
 }