[perl #44865] [BUG] t/stm/basic_mt.t fails on x86_64

[James Keenan via RT]

For the record, we still have two tests SKIPped in this file:

$ prove -v t/stm/basic_mt.t
t/stm/basic_mt......
1..4
ok 1 - wait (simple)
ok 2 # SKIP Intermittent failures on all platforms
ok 3 # SKIP Intermittent failures on all platforms
ok 4 - wait + invalidate outer transcation
ok
All tests successful.
Files=1, Tests=4,  3 wallclock secs ( 0.01 usr  0.00 sys +  0.10 cusr 
0.01 csys =  0.12 CPU)
Result: PASS