#359 PRINTER-DRV: fix crash when initializing 1520

[Carlo Bramini]

After buiding latest sources, VICE brutally crashes immediately after run on my PC.
This happens because there is a bug into drv-1520.
In function drv_1520_init_resources(), the pointer to drv_select is not initialized and not NULL in debug mode. As result, the emulators tried to call that invalid pointer, causing the crash.
While looking to this issue, I also noticed that also drv-ascii and drv-raw have a redundand initialization of drv_select, so I removed the useless one.
Attached patch fixes the issue.

[Carlo Bramini]

The patch.

[Querino]

yes, i noticed this too, related to

https://sourceforge.net/p/vice-emu/code/43621/

[gpz]

applied in r43652, thanks!