gdal_rasterize fails to create a idrisi file

[johanvdw]

When trying to create a raster file using gdal_rasterize it fails if the raster driver is idrisi:

C:\warmerda\bld\bin>gdal_rasterize -a uidn -l wlas -of RST -te 201633 153890 207499 164047 -tr 1 1 E:\data\test\ e:\data\test\wlas.rst
ERROR 3: Can't read(e:\data\test\wlas.rst) block with X offset 0 and Y offset 0.
No such file or directory
ERROR 1: e:\data\test\wlas.rst, band 1: IReadBlock failed at X offset 0, Y offset 0
ERROR 3: Can't read(e:\data\test\wlas.rst) block with X offset 0 and Y offset 1.
No such file or directory
...

Doing the same conversion to Geotiff works correctly:

C:\warmerda\bld\bin>gdal_rasterize -a uidn -l wlas -of GTiff -te 201633 153890 207499 164047 -tr 1 1 E:\data\test\ e:\data\test\wlas.tif
0...10...20...30...40...50...60...70...80...90...100 - done.

[johanvdw]

I don't think the input shapefile matters, but I've put it here nevertheless to reproduce the problem: ​http://gisky.be/test.zip

[Even Rouault]

In 38147:

Idrisi: make Create() zero-initialize the .rst file (fixes #6873)

[Even Rouault]

In 38148:

Idrisi: make Create() zero-initialize the .rst file (fixes #6873)

[Even Rouault]

In 38149:

Idrisi: make Create() zero-initialize the .rst file (fixes #6873)