New type 'TStatus' for thread status/error codes

lfunc.c

@@ -140,7 +140,8 @@ static void checkclosemth (lua_State *L, StkId level) {
 ** the 'level' of the upvalue being closed, as everything after that
 ** won't be used again.
 */
-static void prepcallclosemth (lua_State *L, StkId level, int status, int yy) {
+static void prepcallclosemth (lua_State *L, StkId level, TStatus status,
+                                            int yy) {
   TValue *uv = s2v(level);  /* value being closed */
   TValue *errobj;
   if (status == CLOSEKTOP)
@@ -224,7 +225,7 @@ static void poptbclist (lua_State *L) {
 ** Close all upvalues and to-be-closed variables up to the given stack
 ** level. Return restored 'level'.
 */
-StkId luaF_close (lua_State *L, StkId level, int status, int yy) {
+StkId luaF_close (lua_State *L, StkId level, TStatus status, int yy) {
   ptrdiff_t levelrel = savestack(L, level);
   luaF_closeupval(L, level);  /* first, close the upvalues */
   while (L->tbclist.p >= level) {  /* traverse tbc's down to that level */