Fix -Wnon-virtual-dtor compiler warnings.

core/src/fpdfapi/fpdf_font/ttgsubtable.h

Index: core/src/fpdfapi/fpdf_font/ttgsubtable.h
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.h b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
index c381a01304d92176aed37d53d0a76e11677badc2..6b1b4f2443a6edbdb583c0852ba3d0f0a9f2b23e 100644
--- a/core/src/fpdfapi/fpdf_font/ttgsubtable.h
+++ b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
@@ -414,6 +414,11 @@ public:
         delete this;
     }
     virtual FX_BOOL GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum) FX_OVERRIDE;
+
     CFX_CTTGSUBTable m_GsubImp;
+
+private:
+    ~CFX_GSUBTable() { }

[brucedawson, 2015/01/09 00:20:49]

Shouldn't this be dealt with by one of the base classes? I'm guessing that this
is unnecessary or that a protected or virtual destructor in the base class that
introduces Release and/or GetVerticalGlyph would be better.

[Tom Sepez, 2015/01/09 01:16:53]

removed, the protected destructor is present in IFX_GSUBTable.

 };
 #endif
+