Re: [PATCH 0/1] MR2723: evr: Fix incorrect integral computation.

[eric pouech (＠epo)]

yes, any form that lets the result of the multiplication to be signed integer

so any of these will do
- make lines a signed int
- or cast (lines - 1) to a signed int
- or cast the result of the (unsigned) multiplication to a signed int

one could event prefer adding a positive integer to subtracting a negative one:
```
if (src_stride < 0) src += (-src_stride) * (lines - 1);
```
which I find more readable to show to intent to walk the image starting from last line in memory order