Refresh child file handles on status read

Refresh child file handles on status read

If a child process dies while the parent is attempting to read status
information from the child, the pipe connecting the two will be cleaned
up.  The parent mustn't attempt to read from the dead pipe or it will
result in a bad file descriptor error, culminating in a high-cpu
infinite loop on the parent (Listener) process.

Signed-off-by: Bill Erickson <berick@esilibrary.com>