The macro TEST_VERIFY_EXIT is used several times on
sunrpc/tst-udp-timeout to exit the test if a condition evaluates to
false. The side effect is that the code to terminate the RPC server
process is not executed when the program calls exit, so that
sub-process stays alive.
This commit registers a clean up function with atexit to kill the
server process before exiting the main program.
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
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