unix test fails under valgrind due to alternate stack changes
More fallout from !3983 (merged). The valgrind wrapper fails on the unix
test with:
not ok /glib-unix/sighup/alternate-stack - GLib:ERROR:../glib/tests/unix.c:607:test_signal_alternate_stack: assertion failed (stack_memory == zero_mem)
Bail out!
/cc @3v1n0