Fix fork problem 114_bound_signal
Fix fork problem 114_bound_signal

There is a race condition in old libc in fork().
The result was that 'end' was sometimes printed twice.

This did not happen with glibc-2.32.

mingodad/tinycc,mirror/tinycc,mingodad/tinycc,mirror/tinycc,mirror/tinycc,mingodad/tinycc,mingodad/tinycc,mirror/tinycc