CID 1454769: Resource leaks in build_establish_intro_dos_extension()
Caused by #31682 (moved), which was a fix to another coverity issue.
CID 1454769: Resource leaks (RESOURCE_LEAK)
/src/feature/hs/hs_cell.c: 533 in build_establish_intro_dos_extension()
527 TRUNNEL_DOS_PARAM_TYPE_INTRO2_BURST_PER_SEC,
528 service_config->intro_dos_burst_per_sec);
529
530 /* Set the field with the encoded DoS extension. */
531 ret = trn_cell_extension_dos_encoded_len(dos_ext);
532 if (BUG(ret <= 0)) {
CID 1454769: Resource leaks (RESOURCE_LEAK)
Variable "field" going out of scope leaks the storage it points to.
533 return -1;
534 })