Fix segfault when trying to set a read-only field on player_t

src/lua_playerlib.c

@@ -843,7 +843,7 @@ static int player_get(lua_State *L)
 	return 1;
 }
 
-#define NOSET luaL_error(L, LUA_QL("player_t") " field " LUA_QS " should not be set directly.", field)
+#define NOSET luaL_error(L, LUA_QL("player_t") " field " LUA_QS " should not be set directly.", player_opt[field])
 static int player_set(lua_State *L)
 {
 	player_t *plr = *((player_t **)luaL_checkudata(L, 1, META_PLAYER));
@@ -1392,7 +1392,7 @@ static int power_len(lua_State *L)
 }
 
 #define NOFIELD luaL_error(L, LUA_QL("ticcmd_t") " has no field named " LUA_QS, field)
-#define NOSET luaL_error(L, LUA_QL("ticcmd_t") " field " LUA_QS " should not be set directly.", field)
+#define NOSET luaL_error(L, LUA_QL("ticcmd_t") " field " LUA_QS " should not be set directly.", ticcmd_opt[field])
 
 enum ticcmd_e
 {