[src/trunk]: src/lib/libc/time don't print ???, requested by kre@

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/72fb34d1b701
branches:  trunk
changeset: 455624:72fb34d1b701
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Apr 07 22:31:54 2019 +0000

description:
don't print ???, requested by kre@

diffstat:

 lib/libc/time/strftime.c |  7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diffs (28 lines):

diff -r 908b612e530e -r 72fb34d1b701 lib/libc/time/strftime.c
--- a/lib/libc/time/strftime.c  Sun Apr 07 22:23:40 2019 +0000
+++ b/lib/libc/time/strftime.c  Sun Apr 07 22:31:54 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: strftime.c,v 1.45 2019/04/07 14:51:14 christos Exp $   */
+/*     $NetBSD: strftime.c,v 1.46 2019/04/07 22:31:54 christos Exp $   */
 
 /* Convert a broken-down timestamp to a string.  */
 
@@ -35,7 +35,7 @@
 static char    elsieid[] = "@(#)strftime.c     7.64";
 static char    elsieid[] = "@(#)strftime.c     8.3";
 #else
-__RCSID("$NetBSD: strftime.c,v 1.45 2019/04/07 14:51:14 christos Exp $");
+__RCSID("$NetBSD: strftime.c,v 1.46 2019/04/07 22:31:54 christos Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -550,7 +550,8 @@
                                            tzgetname(sp, dst);
                                        if (z == NULL)
                                                z = tzgetname(sp, !dst);
-                                       pt = _add(z ? z : "???", pt, ptlim);
+                                       if (z != NULL)
+                                               pt = _add(z, pt, ptlim);
                                        errno = oerrno;
                                }
 #endif