Sergei Golubchik 621fae3cbc MDEV-25802 mtr: race condition if the test quickly restarts twice ...

part II

need to tell SafeProcess not to collect the exited mysqld
in sleep_until_file_created(), so that it would be found in the
later wait_any_timeout() in run_testcase()

Removed a strange condition in SafeProcess::wait_one()
that treated return value of -1 from waitpid() as "process exists"
instead of as "no such child process" (see `perldoc -f waitpid`)

2021-07-06 16:12:13 +02:00

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