t/Test2/modules/API/Instance.t leaks a shm resource in blead perl

[tonycoz]

Found in bleadperl, where this is making daily build testers leak shm blocks:

tony@mars:.../perl/t$ ipcs -m

------ Shared Memory Segments --------
key shmid owner perms bytes nattch status
0x0052e6a9 0 postgres 600 56 5
0x0052ea91 32769 postgres 600 29278208 4
0x0052e2c1 65538 postgres 600 32342016 4

tony@mars:.../perl/t$ ./perl TEST ../cpan/Test-Simple/t/Test2/modules/API/Instance.t
t/../cpan/Test-Simple/t/Test2/modules/API/Instance ... ok
All tests successful.
Elapsed: 1 sec
u=0.01 s=0.00 cu=0.17 cs=0.02 scripts=1 tests=79
tony@mars:.../perl/t$ ipcs -m

------ Shared Memory Segments --------
key shmid owner perms bytes nattch status
0x0052e6a9 0 postgres 600 56 5
0x0052ea91 32769 postgres 600 29278208 4
0x0052e2c1 65538 postgres 600 32342016 4
0x00000000 15466500 tony 666 64 0

Adding:

$one->ipc_free_shm;

to the end of the last block in Instance.t prevents the leak but may not the the correct solution.