Fix windows echo error level 1
@@ -107,7 +107,7 @@ outputs:
# Encode & decode tests
- printf "P6 1 1 63 000" > test.ppm # [not win]
- - <nul set /p dummy="P6 1 1 63 000" > test.ppm # [win]
+ - echo | set /p dummy="P6 1 1 63 000" > test.ppm # [win]
- cjxl test.ppm test.jxl
- djxl test.jxl test.ppm
- cjpeg_hdr test.ppm test.jpg
