XFA: Manually apply changes to fpdf_text.h and fx_font.h from master

core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp

Index: core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
index 472e96a3c409ce15418e3b841cbbc30673075f37..89ac8ac1438e3e9ef403dc31d9bdbbcc6e165b66 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_text.cpp
@@ -790,10 +790,10 @@ void CPDF_RenderStatus::DrawTextPathWithPattern(
     ProcessPath(&path, pObj2Device);
   }
 }
+
 CFX_PathData* CPDF_Font::LoadGlyphPath(FX_DWORD charcode, int dest_width) {
   int glyph_index = GlyphFromCharCode(charcode);
-  if (m_Font.m_Face == NULL) {
-    return NULL;
-  }
+  if (!m_Font.GetFace())
+    return nullptr;
   return m_Font.LoadGlyphPath(glyph_index, dest_width);
 }