instantiate4.C testcase succeeds on subsequent make check runs

[Jason Merrill]

>>>>> Alexandre Oliva <oliva@dcc.unicamp.br> writes:

 > On Dec  1, 1998, Franz Sirl <Franz.Sirl-kernel@lauterbach.com> wrote:

 >> on powerpc-unknown-linux-gnu the testcase g++.pt/instantiate4.C fails
 >> on the first run, but succeeds if I run make check again.

 > Well, it should work without requiring two link steps...

It looks like it does; the problem is that the test harness treats the
informational messages from collect as errors.

Jason