#define OPT_STR(opt, param) \
do { \
int ret; \
- if (param && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
+ if (param!=NULL && (ret = x264_param_parse(&x4->params, opt, param)) < 0) { \
if(ret == X264_PARAM_BAD_NAME) \
av_log(avctx, AV_LOG_ERROR, \
"bad option '%s': '%s'\n", opt, param); \