Coverity fixes from Nelson

* merges:
  Add a couple of missing semicolons on last commit
  Fix build
  Add some sanity assertions to format conversions.
  Coverity: UNINIT: CID 409,408,407,406
  Coverity: UNINIT: CID 410
  Coverity: UNREACHABLE: CID 426, 425, 424, 423, 422, 421
  Coverity: UNINIT: CID 453
  Coverity: Uninit: CID 473
  Coverity: Char IO: CID 595
  Coverity: No effect: CID 598
  Coverity: LOCK: CID 597