testing: profiles not written on test failure

[rsc]

It seems reasonable to want to get a profile for a test that is failing. But the
profiles are only written when a test passes.

https://golang.org/cl/90930044

[gopherbot]

Comment 1:

CL https://golang.org/cl/90930044 mentions this issue.

[rsc]

Comment 2:

This issue was closed by revision 21e75b3.

Status changed to Fixed.