Change colorspace's number of components to be unsigned

core/src/fpdfapi/fpdf_render/fpdf_render_image.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 "core/src/fpdfapi/fpdf_render/render_int.h"
 
 #include <utility>
 #include <vector>
@@ skipping 899 matching lines @@
     if (pBC) {
       CPDF_Dictionary* pDict = pGroup->GetDict();
       if (pDict && pDict->GetDictBy("Group"))
         pCSObj = pDict->GetDictBy("Group")->GetElementValue("CS");
       else
         pCSObj = NULL;
       pCS = m_pContext->GetDocument()->LoadColorSpace(pCSObj);
       if (pCS) {
         FX_FLOAT R, G, B;
         FX_DWORD comps = 8;
-        if (pCS->CountComponents() > static_cast<int32_t>(comps)) {
-          comps = (FX_DWORD)pCS->CountComponents();
+        if (pCS->CountComponents() > comps) {
+          comps = pCS->CountComponents();
         }
         CFX_FixedBufGrow<FX_FLOAT, 8> float_array(comps);
         FX_FLOAT* pFloats = float_array;
         FX_SAFE_DWORD num_floats = comps;
         num_floats *= sizeof(FX_FLOAT);
         if (!num_floats.IsValid()) {
           return NULL;
         }
         FXSYS_memset(pFloats, 0, num_floats.ValueOrDie());
         int count = pBC->GetCount() > 8 ? 8 : pBC->GetCount();
@@ skipping 56 matching lines @@
   } else if (pFunc) {
     int size = dest_pitch * height;
     for (int i = 0; i < size; i++) {
       dest_buf[i] = transfers[src_buf[i]];
     }
   } else {
     FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height);
   }
   return pMask.release();
 }