diff -urN newt-0.51.6.orig/textbox.c newt-0.51.6/textbox.c
--- newt-0.51.6.orig/textbox.c	2003-01-03 12:54:45.000000000 -0800
+++ newt-0.51.6/textbox.c	2005-08-12 19:31:03.000000000 -0700
@@ -418,6 +418,7 @@
     int i;
     struct textbox * tb = co->data;
 
+    if (tb->sb) tb->sb->ops->destroy(tb->sb);
     for (i = 0; i < tb->numLines; i++) 
 	free(tb->lines[i]);
     free(tb->lines);