tidying: char signedness

[exim.git] / src / src / tls.c

diff --git a/src/src/tls.c b/src/src/tls.c
index be9377665f0f46d118528b1fdb19e69f1b3ed4de..55295108c1315038968945d09e6a2c871f8b82d2 100644 (file)
--- a/src/src/tls.c
+++ b/src/src/tls.c
@@ -99,7 +99,7 @@ restore_tz(uschar * tz)
 if (tz)
   (void) setenv("TZ", CCS tz, 1);
 else
-  (void) os_unsetenv("TZ");
+  (void) os_unsetenv(US"TZ");
 tzset();
 }