--- ray/src/px/xshowtrace.c	1992/04/21 17:24:51	2.2
+++ ray/src/px/xshowtrace.c	1992/10/30 09:54:19	2.3
@@ -92,7 +92,8 @@ char	*argv[];
 		exit(1);
 					/* loop on input */
 	mainloop();
-
+					/* close pipe and exit */
+	pclose(pin);
 	exit(0);
 }