tests: internal: fuzzer: fix missing data type declaration
#define GET_MOD_EQ(max, idx) (data[0] % max) == idx
#define MOVE_INPUT(offset) data += offset; size -= offset;
-char *get_null_terminated(size_t size, char **data, *total_data_size) {
+char *get_null_terminated(size_t size, char **data, size_t *total_data_size)
+{
char *tmp = flb_malloc(size+1);
memcpy(tmp, *data, size);
tmp[size] = '\0';
