Fix four annoying warnings:
authorTom Sepez <tsepez@chromium.org>
Thu, 21 May 2015 21:54:17 +0000 (14:54 -0700)
committerTom Sepez <tsepez@chromium.org>
Thu, 21 May 2015 21:54:17 +0000 (14:54 -0700)
commite6406b39d09f765f5f1a1530a3a737f17a0666c1
tree79b2b130b121750deff93feb206695614552f4f3
parentbc4b82ea7a9c6603c6a1c89e00f4e6381c1b6804
Fix four annoying warnings:
Two "set but unused", one of which is surely an artifact from
copying code around, and the other which ought to be used for
the sake of clarity.

Two are unknown "optimize" pragmas, remove them since the code
has been shipped for years on other platforms under full optimization.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1148353002
core/src/fpdfapi/fpdf_edit/fpdf_edit_image.cpp
core/src/fpdfapi/fpdf_page/fpdf_page_func.cpp
core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp