bungeman

Restore STDERR in pngtest.c

1

In "test: Add consistency checks for the PNG_LIBPNG_VER* number" [0] the `STDERR` macro was moved from outside an `ifdef` to inside an `ifdef`. This broke the code in the `else`...

In tools/third_party/pdf_js there is a very old copy of pdf.js (a bit over four years old now). It should be updated as there have been a large number of improvements...