Change the prototype to keep the same with the declaration.

fujuntang

2021-08-31 a884fbe1c98e91d8922ac3017e1179e2edc28ef0

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ipcrm -a
 
./dgram_mod_req_rep server 2 & node0=$! && sleep 1
./dgram_mod_req_rep client 2 node1
kill $node0