Change colorspace's number of components to be unsigned

core/src/fpdfapi/fpdf_render/fpdf_render_pattern.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 "core/include/fpdfapi/fpdf_pageobj.h"
 #include "core/include/fpdfapi/fpdf_render.h"
@@ skipping 814 matching lines @@
   CPDF_ColorSpace* pColorSpace = pPattern->m_pCS;
   if (!pColorSpace) {
     return;
   }
   FX_ARGB background = 0;
   if (!pPattern->m_bShadingObj &&
       pPattern->m_pShadingObj->GetDict()->KeyExist("Background")) {
     CPDF_Array* pBackColor =
         pPattern->m_pShadingObj->GetDict()->GetArrayBy("Background");
     if (pBackColor &&
-        pBackColor->GetCount() >= (FX_DWORD)pColorSpace->CountComponents()) {
+        pBackColor->GetCount() >= pColorSpace->CountComponents()) {
       CFX_FixedBufGrow<FX_FLOAT, 16> comps(pColorSpace->CountComponents());
       for (int i = 0; i < pColorSpace->CountComponents(); i++) {
         comps[i] = pBackColor->GetNumberAt(i);
       }
       FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
       pColorSpace->GetRGB(comps, R, G, B);
       background = ArgbEncode(255, (int32_t)(R * 255), (int32_t)(G * 255),
                               (int32_t)(B * 255));
     }
   }
@@ skipping 350 matching lines @@
     }
   }
   if (bStroke) {
     CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor();
     if (StrokeColor.m_pCS && StrokeColor.m_pCS->GetFamily() == PDFCS_PATTERN) {
       DrawPathWithPattern(pPathObj, pObj2Device, &StrokeColor, TRUE);
       bStroke = FALSE;
     }
   }
 }