ddraw: Use SetRectEmpty() instead of open coding it.

[Michael Stefaniuc]

On 03/03/2016 09:38 AM, Marvin wrote:
> Hi,
> 
> While running your changed tests on Windows, I think I found new failures.
> Being a bot and all I'm not very good at pattern recognition, so I might be
> wrong, but could you please double-check?
> Full results can be found at
> https://testbot.winehq.org/JobDetails.pl?Key=21137
> 
> Your paranoid android.
> 
> 
> === w864 (32 bit d3d) ===
> d3d.c:2326: Test failed: Unexpected destination texture level pixels; 2031 differences at 0 level
> d3d.c:2326: Test failed: Unexpected destination texture level pixels; 518 differences at 1 level
> d3d.c:2326: Test failed: Unexpected destination texture level pixels; 138 differences at 2 level
> d3d.c:2326: Test failed: Unexpected destination texture level pixels; 46 differences at 3 level
> d3d.c:2510: Test failed: Unexpected destination texture level pixels; 257 differences
> d3d.c:2657: Test failed: Unexpected destination texture level pixels; 256 differences at 2 level
> d3d.c:2657: Test failed: Unexpected destination texture level pixels; 64 differences at 3 level
> d3d.c:2657: Test failed: Unexpected destination texture level pixels; 16 differences at 4 level
> d3d.c:2657: Test failed: Unexpected destination texture level pixels; 4 differences at 5 level
> 
> === w1064 (32 bit d3d) ===
> d3d.c:2326: Test failed: Unexpected destination texture level pixels; 2031 differences at 0 level
> d3d.c:2326: Test failed: Unexpected destination texture level pixels; 518 differences at 1 level
> d3d.c:2326: Test failed: Unexpected destination texture level pixels; 138 differences at 2 level
> d3d.c:2326: Test failed: Unexpected destination texture level pixels; 46 differences at 3 level
> d3d.c:2510: Test failed: Unexpected destination texture level pixels; 257 differences
> d3d.c:2657: Test failed: Unexpected destination texture level pixels; 256 differences at 2 level
> d3d.c:2657: Test failed: Unexpected destination texture level pixels; 64 differences at 3 level
> d3d.c:2657: Test failed: Unexpected destination texture level pixels; 16 differences at 4 level
> d3d.c:2657: Test failed: Unexpected destination texture level pixels; 4 differences at 5 level


This are unrelated pre-existing errors, e.g.
https://test.winehq.org/data/0d06ebf5fb515e19cd9ec951dd9e49f6e678b35c/win8_newtb-w8/ddraw:d3d.html

bye
	michael