add unistd.h for close() calling#2
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genius3212 wants to merge 1 commit intouestcll:masterfrom
genius3212:master
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add unistd.h for close() calling#2genius3212 wants to merge 1 commit intouestcll:masterfrom genius3212:master
genius3212 wants to merge 1 commit intouestcll:masterfrom
genius3212:master