Remove a useless check if fd is negative
If slave is negative, neither dup2(slave,0) or close(slave) should be executed. I believe this check is completely useless.
slave
dup2(slave,0)
close(slave)
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Remove a useless check if fd is negative
If
slaveis negative, neitherdup2(slave,0)orclose(slave)shouldbe executed. I believe this check is completely useless.