Fix a leak in CPDF_SyntaxParser::GetObject().
Fix a leak in CPDF_SyntaxParser::GetObject().

As seen in FPDFViewEmbeddertest.Crasher_451830.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1385803002 .

andoma/pdfium,DrAlexx/pdfium,DrAlexx/pdfium,andoma/pdfium,DrAlexx/pdfium,andoma/pdfium,DrAlexx/pdfium,andoma/pdfium