• fix memory leaks found by coverity

from netbsd via oksh
  we had the NULL pointer deref already fixed
• avoid a bogus not-setting the return value of edit.c:x_file_glob()
  introduced by the above change in oksh
• escape ? as well (but not ] because that’s wrong)
  reminded by cbiere@netbsd via oksh
• Unsetting a non-existent variable is not an error. See
  http://www.opengroup.org/onlinepubs/009695399/utilities/unset.html
  report from Arkadiusz Miskiewicz; fixed based on
  http://cvs.pld-linux.org diff via oksh but modified slightly
• Be more smart waiting for input for non-interactive scripts.  Fix
  based on a diff from debian:  see their bug#296446 (via oksh)
  modified slightly
  this also fixes cnuke@’s “mksh busy loop” problem, for which I never
  received a bug report, but the Debian bug page contains a set of two
  scripts to reproduce this before (and no longer after) this commit
• some KNF
• bump version

misc.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: misc.c,v 1.30 2006/03/12 00:26:58 deraadt Exp $	*/
+/*	$OpenBSD: misc.c,v 1.32 2007/08/02 11:05:54 fgsch Exp $	*/
 /*	$OpenBSD: path.c,v 1.12 2005/03/30 17:16:37 deraadt Exp $	*/
 
 #include "sh.h"
@@ -6,7 +6,7 @@
 #include <grp.h>
 #endif
 
-__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.65 2007/08/12 13:42:21 tg Exp $\t"
+__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.66 2007/09/09 18:06:41 tg Exp $\t"
 	MKSH_SH_H_ID);
 
 #undef USE_CHVT