diff options
| -rw-r--r-- | lib/xwrap.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/xwrap.c b/lib/xwrap.c index 09f9197d..a20d4b6b 100644 --- a/lib/xwrap.c +++ b/lib/xwrap.c @@ -704,13 +704,13 @@ void xregcomp(regex_t *preg, char *regex, int cflags) char *xtzset(char *new) { - char *tz = getenv("TZ"); + char *old = getenv("TZ"); - if (tz) tz = xstrdup(tz); - if (setenv("TZ", new, 1)) perror_exit("setenv"); + if (old) old = xstrdup(old); + if (new ? setenv("TZ", new, 1) : unsetenv("TZ")) perror_exit("setenv"); tzset(); - return tz; + return old; } // Set a signal handler |