psMatrixLUD does not accept NULL output

[Paul Price]

psMatrixLUD fails with a SEGV when outImage == NULL, since it fails to allocate
the image. The function worked successfully in rel3.

The bug is due, I believe, to psImageRecycle not altering outImage:

psImageRecycle(outImage, inImage->numCols, inImage->numRows,

inImage->type.type);
leaves outImage untouched, so should be:

outImage = psImageRecycle(outImage, inImage->numCols, inImage->numRows,

inImage->type.type);

Temporary workaround is to allocate the matrix before calling psMatrixLUD.

[robert.desonia@…]

This was a problem not only in psMatrixLUD, but other functions in
psMatrix.c that used psImageRecycle.

The fix is in the CVS head as well as in the rel4 branch (e.g., cvs co -r rel4
psLib).

-rdd