Avoid perpetual spins for parserless CPDF_Pages

This is an obstacle to introducing dummy CPDF_Pages to underly all
CPDFXFA_Pages, since we would then have a parserless CPDF_Page, whose
parse could never succeed or fail. The m_ParseState would never change,
and if the caller dutifully recalls us until that changes, we hang.

Small separate CL since it might impact non-XFA cases unexpectedly.

Change-Id: I002064e5d4caa44935f50bde0f3b00e3b8cb0bfe
Reviewed-on: https://pdfium-review.googlesource.com/31850
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

0 files changed, 0 insertions, 0 deletions