Fix a leak with FPDFPageObj_NewImgeObj().

core/fpdfapi/fpdf_page/fpdf_page_parser.cpp

Index: core/fpdfapi/fpdf_page/fpdf_page_parser.cpp
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp b/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp
index e20fe44db869f5768725d59e8566c78092fafc31..1437101bfc1cae2f2ba70db4b42c1fc6fbbb9873 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp
@@ -784,13 +784,13 @@ CPDF_ImageObject* CPDF_StreamContentParser::AddImage(CPDF_Stream* pStream,
 
   std::unique_ptr<CPDF_ImageObject> pImageObj(new CPDF_ImageObject);
   if (pImage) {
-    pImageObj->m_pImage =
-        m_pDocument->GetPageData()->GetImage(pImage->GetStream());
+    pImageObj->SetUnownedImage(
+        m_pDocument->GetPageData()->GetImage(pImage->GetStream()));
   } else if (pStream->GetObjNum()) {
-    pImageObj->m_pImage = m_pDocument->LoadImageF(pStream);
+    pImageObj->SetUnownedImage(m_pDocument->LoadImageF(pStream));
   } else {
-    pImageObj->m_pImage = new CPDF_Image(m_pDocument);
-    pImageObj->m_pImage->LoadImageF(pStream, bInline);
+    pImageObj->SetOwnedImage(
+        WrapUnique(new CPDF_Image(m_pDocument, pStream, bInline)));
   }
   SetGraphicStates(pImageObj.get(), pImageObj->GetImage()->IsMask(), FALSE,
                    FALSE);