Fix compilation of pngdumper.
Fix compilation of pngdumper.

Change-Id: I15c281d6ddfe9dafa6b4411a47b341be35dbf98d
Reviewed-by: Shawn Rutledge <7b40856c8c1100512025516d7c58756d644d9e8d@digia.com>
Reviewed-by: Alan Alpert <da25f2afbbb946022229108d81aeba0c6b35c5c3@blackberry.com>

kobolabs/qtgraphicaleffects