m->elems[m->count].key = copy_key;
m->elems[m->count].value = copy_value;
if (oldval && flags & AV_DICT_APPEND) {
- int len = strlen(oldval) + strlen(copy_value) + 1;
+ size_t len = strlen(oldval) + strlen(copy_value) + 1;
char *newval = av_mallocz(len);
if (!newval)
goto err_out;