Image name should use image width and height and not canvas size

[Cyril Concolato]

testsuite/scripts/ttxtdec.sh

Line 56 in 87da963

 dump=$TEMP_DIR/'dump_$Timescale$_$cts$_$dur$_$CropOrigin$_$OriginalSize$.png' 

$OriginalSize$ should probably be replaced by $Width$x$Height$

[Jean Le Feuvre]

no, the test is designed to check that $CropOrigin$ and $OriginalSize$ properties are set on output pid, the check for width and height is implicit (png encode)