refs.c: spell NULL pointer as NULL

A call to update_ref_lock() passes '0' to the 'int *type_p' parameter. Noticed by sparse. ("Using plain integer as NULL pointer") Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>

Ramsay Jones committed Oct 6, 2013 at 21:49 UTC ce1e8462070868bd83f9bc79f90f62d6927f8332
1 file changed +1 -1
refs.c
+1 -1
@@ -3235,7 +3235,7 @@ int update_ref(const char *action, const char *refname,
3235 int flags, enum action_on_err onerr)
3236 {
3237 struct ref_lock *lock;
3238 - lock = update_ref_lock(refname, oldval, flags, 0, onerr);
3238 + lock = update_ref_lock(refname, oldval, flags, NULL, onerr);
3239 if (!lock)
3240 return 1;
3241 return update_ref_write(action, refname, sha1, lock, onerr);