Coverity fixes from Nelson

* merges:
  Coverity: Assert side effect: CID 2
  Coverity: Checked return: CID 10
  Coverity: Checked return: CID 11
  Coverity: Checked return: CID 12
  Coverity: Char IO: CID 7
  Coverity: No effect: CID 134
  Coverity: Overrun static: CID 137, 136
  Coverity: Overrun static: CID 139
  Coverity: Overrun static: CID 141
  Coverity: Resource leak: CID 178
  Coverity: Resource leak: CID 180
  Coverity: Resource leak: CID 181
  Coverity: Resource leak: CID 181
  Coverity: Resource leak: CID 183
  Coverity: Resource Leak: CID 184
  Coverity: Resource Leak: CID 185
  Coverity: Forward NULL: CID 605
  Coverity: Missing return: CID 606