example.lsp: use (wait PID)

example.lsp

@@ -3,14 +3,16 @@
     (progn
       (format (error-output) "Usage: ~A ~A USERNAME@DOMAIN PASSWORD~%" $EXECUTABLE_NAME $PROGRAM_NAME)
       (return-from main nil)))
-  (defglobal account (car args))
-  (defglobal password (cadr args))
+
+  (let ((account (car args))
+        (password (cadr args))
+        (sshpid nil))
 
     (with-handler
       (lambda (c)
         (format (error-output) "ssh is not found~%")
         (return-from main nil))
-    (spawn "ssh" account))
+      (setq sshpid (spawn "ssh" account)))
 
     (expect*
       ("[fingerprint])?"
@@ -33,4 +35,7 @@
       ("$ "))
     (sendln "echo YOU CAN CALL SOME COMMAND HERE")
     (expect "$ ")
-  (sendln "exit"))
+    (sendln "exit")
+    (wait sshpid)
+    )
+  )