Fix uninitialized RGB in GetRGB

core/src/fpdfapi/fpdf_page/fpdf_page_colors.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 "../../../include/fpdfapi/fpdf_page.h"
 #include "../../../include/fpdfapi/fpdf_module.h"
 #include "../../../include/fxcodec/fx_codec.h"
 #include "pageint.h"
@@ skipping 1344 matching lines @@
         if (pvalue->m_pPattern && pvalue->m_pPattern->m_pDocument) {
             pvalue->m_pPattern = pvalue->m_pPattern->m_pDocument->GetPageData()->GetPattern(pvalue->m_pPattern->m_pPatternObj, FALSE, &pvalue->m_pPattern->m_ParentMatrix);
         }
     }
 }
 FX_BOOL CPDF_Color::GetRGB(int& R, int& G, int& B) const
 {
     if (m_pCS == NULL || m_pBuffer == NULL) {
         return FALSE;
     }
-    FX_FLOAT r, g, b;
+    FX_FLOAT r=0.0f, g=0.0f, b=0.0f;
     if (!m_pCS->GetRGB(m_pBuffer, r, g, b)) {
         return FALSE;
     }
     R = (FX_INT32)(r * 255 + 0.5f);
     G = (FX_INT32)(g * 255 + 0.5f);
     B = (FX_INT32)(b * 255 + 0.5f);
     return TRUE;
 }
 CPDF_Pattern* CPDF_Color::GetPattern() const
 {
@@ skipping 18 matching lines @@
     PatternValue* pvalue = (PatternValue*)m_pBuffer;
     return pvalue->m_nComps ? pvalue->m_Comps : NULL;
 }
 FX_BOOL CPDF_Color::IsEqual(const CPDF_Color& other) const
 {
     if (m_pCS != other.m_pCS || m_pCS == NULL) {
         return FALSE;
     }
     return FXSYS_memcmp32(m_pBuffer, other.m_pBuffer, m_pCS->GetBufSize()) == 0;
 }