Add commented out type check as noted by @khvzak

Author: bobtfish

src/lbaselib.rs

@@ -167,8 +167,10 @@ unsafe extern "C" fn luaB_getmetatable(L: *mut lua_State) -> c_int {
 
 unsafe extern "C" fn luaB_setmetatable(L: *mut lua_State) -> c_int {
     let _t = lua_type(L, 2);
-    // TODO: FIX
-    luaL_checktype(L, 1, LUA_TTABLE); // FIXME? t is unused?
+    luaL_checktype(L, 1, LUA_TTABLE);
+    // FIXME
+    //luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
+    //    "nil or table expected");
     if luaL_getmetafield(L, 1, cstr!("__metatable")) != LUA_TNIL {
         luaL_error(L, cstr!("cannot change a protected metatable"));
     }
@@ -396,7 +398,7 @@ unsafe extern "C" fn generic_reader(
 }
 
 unsafe extern "C" fn luaB_load(L: *mut lua_State) -> c_int {
-    let status;
+    let status: c_int;
     let mut l: size_t = 0;
     let s = lua_tolstring(L, 1 as c_int, &mut l);
     let mode = luaL_optstring(L, 3, cstr!("bt"));