aboutsummaryrefslogtreecommitdiff
path: root/lib
diff options
context:
space:
mode:
Diffstat (limited to 'lib')
-rw-r--r--lib/xwrap.c8
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