(svn r4530) - Fix [NewGRF]: don't spew a warning when a grf file has no parameters.

settings.c

@@ -1409,10 +1409,10 @@ const char *GRFProcessParams(const IniItem *item, uint index)
 	/* Loading newgrf stuff from configuration file */
 	c = calloc(1, sizeof(*c));
 	c->filename = strdup(item->name);
-	c->num_params = parse_intlist(item->value, (int*)c->param, lengthof(c->param));
-	if (c->num_params == (byte)-1) {
-		ShowInfoF("ini: error in array '%s'", item->name);
-		c->num_params = 0;
+
+	if (*item->value != '\0') {
+		c->num_params = parse_intlist(item->value, (int*)c->param, lengthof(c->param));
+		if (c->num_params == (byte)-1) ShowInfoF("ini: error in array '%s'", item->name);
 	}
 
 	if (_first_grfconfig == NULL) {