Make limitToUint parse to uint instead of int

[damilola-bello]

Attempting to parse a soft/hard limit greater than int32 fails and returns 0 instead.
I believe soft/hard limits are always unsigned, hence no need to attempt to parse as int.

[shirou]

Good catch! LGM, but could you add same thing to v2 also? thanks!

[damilola-bello]

@shirou
Fixing v2 will break backward compatibility as it uses int32 for soft/hard limits:

gopsutil/process/process.go

Line 69 in c7a38de

type RlimitStat struct {

So nothing much can be done to change limitToInt here:

gopsutil/process/process_linux.go

Line 489 in c7a38de

func limitToInt(val string) (int32, error) {

Let me know if I'm missing anything. Thanks.

[shirou]

Sorry, you are correct. That struct has been changed at v3. so nothing can be done. Thank you for your contribution!