Coverity updates/fixes from Nelson

Coverity updates/fixes from Nelson

* merges: (21 commits)
  Coverity: Missing break: CID 67
  Coverity: Missing break: CID 68
  Coverity: Missing break: CID 69
  Coverity: Missing break: CID 72
  Coverity: Missing break: CID 73
  Coverity: Missing Break: CID 76
  Coverity: Missing lock: CID 81
  Coverity: Missing Lock: CID 82
  Fix build
  Coverity: Negative returns: CID 91
  Coverity: Negative RETURNS: CID 106
  Coverity: Negative returns: CID 107
  Coverity: Negative Returns: CID 121
  Coverity: Reverse INULL: CID 202
  Coverity: Reverse INULL: CID 130
  Coverity: Reverse Negative: CID 210
  Coverity: UNINIT: CID 395
  Coverity: Uninit: CID 396
  Coverity: UNINIT: CID 602
  Coverity: Uninit: CID 603
  ...