pdfviewer: fix condition for element in array, reset back the default color to white, and verify ty…

experimental/PdfViewer/pdfparser/native/SkNativeParsedPDF.cpp

Index: experimental/PdfViewer/pdfparser/native/SkNativeParsedPDF.cpp
===================================================================
--- experimental/PdfViewer/pdfparser/native/SkNativeParsedPDF.cpp	(revision 10423)
+++ experimental/PdfViewer/pdfparser/native/SkNativeParsedPDF.cpp	(working copy)
@@ -504,12 +504,12 @@
 
         SkASSERT(!(id < 0 || id > fObjects.count()));
 
-        if (id < 0 || id > fObjects.count()) {
+        // TODO(edisonn): verify id and gen expected
+        if (id < 0 || id >= fObjects.count()) {
+            // TODO(edisonn): report error/warning
             return NULL;
         }
 
-        // TODO(edisonn): verify id and gen expected
-
         if (fObjects[id].fResolvedReference != NULL) {
             return fObjects[id].fResolvedReference;
         }