pdfviewer: debug code for crash

experimental/PdfViewer/SkPdfBasics.h

 #ifndef __DEFINED__SkPdfBasics
 #define __DEFINED__SkPdfBasics
 
 #include "SkCanvas.h"
 #include "SkPaint.h"
 #include "SkPdfConfig.h"
 
 #include <iostream>
 #include <cstdio>
 #include <map>
@@ skipping 332 matching lines @@
         fSkFont       = NULL;
         fLineCap      = 0;
         fLineJoin     = 0;
         fMiterLimit   = 10.0;
         fAphaConstant = 1.0;
         fAlphaSource  = false;
         fDashArrayLength = 0;
         fDashPhase    = 0;
         fBlendModesLength = 1;
         fBlendModes[0] = SkXfermode::kSrc_Mode;  // PDF: Normal Blend mode
+        fSMask        = NULL;
     }
 
     // TODO(edisonn): make two functons instead, stroking and non stoking, avoid branching
     void applyGraphicsState(SkPaint* paint, bool stroking);
 };
 
 // TODO(edisonn): better class design.
 // TODO(edisonn): could we remove it?
 // TODO(edisonn): rename to SkPdfInlineImage
 struct SkPdfInlineImage {
@@ skipping 25 matching lines @@
     kPartial_PdfResult,
     kNYI_PdfResult,
     kIgnoreError_PdfResult,
     kError_PdfResult,
     kUnsupported_PdfResult,
 
     kCount_PdfResult
 };
 
 #endif  // __DEFINED__SkPdfBasics