===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mg/extend.c,v
retrieving revision 1.70
retrieving revision 1.71
diff -u -r1.70 -r1.71
--- src/usr.bin/mg/extend.c	2019/07/18 05:57:48	1.70
+++ src/usr.bin/mg/extend.c	2019/07/18 15:52:11	1.71
@@ -1,4 +1,4 @@
-/*	$OpenBSD: extend.c,v 1.70 2019/07/18 05:57:48 lum Exp $	*/
+/*	$OpenBSD: extend.c,v 1.71 2019/07/18 15:52:11 lum Exp $	*/
 /* This file is in the public domain. */
 
 /*
@@ -603,9 +603,12 @@
 
 		/* make sure it's terminated */
 		excbuf[llength(lp)] = '\0';
-		if ((s = excline(excbuf)) != TRUE)
+		if ((s = excline(excbuf)) != TRUE) {
+			(void) clearvars();
 			return (s);
+		}
 	}
+	(void) clearvars();
 	return (TRUE);
 }