daemon/bindings: nitpicks fixed during MR review

daemon/bindings/cache.c

@@ -126,11 +126,11 @@ static int cache_max_ttl(lua_State *L)
 
 	int n = lua_gettop(L);
 	if (n > 0) {
-		if (!lua_isnumber(L, 1))
+		if (!lua_isnumber(L, 1) || n > 1)
 			lua_error_p(L, "expected 'max_ttl(number ttl)'");
 		uint32_t min = cache->ttl_min;
 		int64_t ttl = lua_tointeger(L, 1);
-		if (ttl < 0 || ttl < min || ttl > UINT32_MAX) {
+		if (ttl < 1 || ttl < min || ttl > UINT32_MAX) {
 			lua_error_p(L,
 				"max_ttl must be larger than minimum TTL, and in range <1, "
 				STR(UINT32_MAX) ">'");

daemon/bindings/net.c

@@ -489,8 +489,8 @@ static int net_tls_padding(lua_State *L)
 
 	const char *errstr = "net.tls_padding parameter has to be true, false,"
 				" or a number between <0, " STR(MAX_TLS_PADDING) ">";
-	if ((lua_gettop(L) != 1))
-		lua_error_p(L, "net.tls_padding takes one parameter: (\"padding\")");
+	if (lua_gettop(L) != 1)
+		lua_error_p(L, "%s", errstr);
 	if (lua_isboolean(L, 1)) {
 		bool x = lua_toboolean(L, 1);
 		if (x) {