John Bowler 8c8aea7fd4 png_app_warning fix ...

The implementations of png_app_error and png_app_warning were swapped.  The
non-release behavior of using PNG_ERROR on both doesn't work in practice because
there are some cases where the warnings are very mild (specifically the one
about writing an iCCP chunk when sRGB could be used.)  png_app_warning now does
PNG_WARN by default in all cases.

Signed-off-by: John Bowler <jbowler@acm.org>

2016-06-08 10:43:25 -07:00

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