Add missing const to CPDF_Stream::InitStream()

core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp

Index: core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp
diff --git a/core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp b/core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp
index 08bdb5bb0766cd02d9702321f4fdb4303ed994aa..2907ebe71c09f2c8587eedb2650f9288dfe300e8 100644
--- a/core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp
+++ b/core/fpdfapi/fpdf_edit/cpdf_pagecontentgenerator.cpp
@@ -115,7 +115,7 @@ void CPDF_PageContentGenerator::ProcessForm(CFX_ByteTextBuf& buf,
   CFX_FloatRect bbox = m_pPage->GetPageBBox();
   matrix.TransformRect(bbox);
   pFormDict->SetAtRect("BBox", bbox);
-  pStream->InitStream((uint8_t*)data, size, pFormDict);
+  pStream->InitStream(data, size, pFormDict);
   buf << "q " << matrix << " cm ";
   CFX_ByteString name = RealizeResource(pStream, "XObject");
   buf << "/" << PDF_NameEncode(name) << " Do Q\n";