screen: use checkudata()

Signed-off-by: Julien Danjou <julien@danjou.info>
2009-07-13 14:23:22 +02:00 · 2009-07-13 14:23:22 +02:00 · e02384e4fe
parent cd862e80cd
commit e02384e4fe
1 changed files with 1 additions and 4 deletions
--- a/screen.c
+++ b/screen.c
@ -366,10 +366,7 @@ static int
 luaA_screen_tags(lua_State *L)
 {
    int i;
-    screen_t *s = lua_touserdata(L, 1);
-
-    if(!s)
-        luaL_typerror(L, 1, "screen");
+    screen_t *s = luaL_checkudata(L, 1, "screen");

    if(lua_gettop(L) == 2)
    {