Fix a bunch of -Wunused-but-set-variable warnings.

core/src/fpdfapi/fpdf_page/pageint.h

Index: core/src/fpdfapi/fpdf_page/pageint.h
diff --git a/core/src/fpdfapi/fpdf_page/pageint.h b/core/src/fpdfapi/fpdf_page/pageint.h
index d9d16a313458126433b1f6d4334093e58f9851eb..df98312824882333a6e33c7879d14404999a35fc 100644
--- a/core/src/fpdfapi/fpdf_page/pageint.h
+++ b/core/src/fpdfapi/fpdf_page/pageint.h
@@ -423,8 +423,9 @@ public:
     ~CPDF_IccProfile();
     FX_INT32 GetComponents() const { return m_nSrcComponents; }
     FX_BOOL					m_bsRGB;
-    FX_INT32                m_nSrcComponents;
     FX_LPVOID				m_pTransform;
+private:
+    FX_INT32                m_nSrcComponents;

[Lei Zhang, 2015/04/17 00:34:10]

This is the only one I can make private, and it made the decl order here match
with the init order in the .cpp file. This quells a compiler warning.

 };
 class CPDF_DeviceCS : public CPDF_ColorSpace
 {