fix uselocale((locale_t)0) not to modify locale

commit 68630b55c0c7219fe9df70dc28ffbf9efc8021d8 made the new locale to
be assigned unconditonally resulting in crashes later on.

diff --git a/src/locale/uselocale.c b/src/locale/uselocale.c
index b70a0c1..0fc5ecb 100644 (file)
--- a/src/locale/uselocale.c
+++ b/src/locale/uselocale.c
@@ -8,9 +8,7 @@ locale_t __uselocale(locale_t new)
        locale_t old = self->locale;
        locale_t global = &libc.global_locale;
 
-       if (new == LC_GLOBAL_LOCALE) new = global;
-
-       self->locale = new;
+       if (new) self->locale = new == LC_GLOBAL_LOCALE ? global : new;
 
        return old == global ? LC_GLOBAL_LOCALE : old;
 }