Strict warning: call_user_func() expects valid callback in HierarchicalSelectInternals::getInfo()

Strict warning: call_user_func() expects parameter 1 to
be a valid callback, non-static method HierarchicalSelectInternals::getInfo() should not be called statically in simpletest_test_get_all() (line 372 of {path}/modules/simpletest/simpletest.module).

GetInfo() should be declared as static I think in tests/internal.test