Add FIXME for indirect call var resizing

Author: ChAoSUnItY

src/parser.c

@@ -838,6 +838,10 @@ void read_func_parameters(func_t *func, block_t *parent, basic_block_t **bb)
 
         param = opstack_pop();
 
+        /* FIXME: Indirect call currently does not pass the function instance,
+         * therefore no resize will happen on indirect call. This NULL check
+         * should be removed once indirect call can provide function instance.
+         */
         if (func) {
             if (param_num >= func->num_params && func->va_args) {
                 param = promote(parent, bb, param, TY_int, 0);