[NaCl SDK] nacl_io: add return value to nacl_io_init.

[NaCl SDK] nacl_io: add return value to nacl_io_init.

The underlying ki_init functions were returning
their success but for some reason nacl_io_init was
ignoring this and returning void.

Committed: https://crrev.com/9ae3cc379b1aef7d6ae76f1eedc773d297489e07
Cr-Commit-Position: refs/heads/master@{#296752}

[Sam Clegg, 2014-09-24 23:55:43]

sbc@chromium.org changed reviewers:
+ binji@chromium.org

[binji, 2014-09-24 23:59:46]

lgtm

[Sam Clegg, 2014-09-25 15:53:05]

The CQ bit was checked by sbc@chromium.org

[commit-bot: I haz the power, 2014-09-25 15:53:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/598223004/1

[commit-bot: I haz the power, 2014-09-25 15:57:15]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-09-25 15:57:15]

Try jobs failed on following builders:
  mac_gpu on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/mac_gpu/builds/60692)
  win_gpu on tryserver.chromium.gpu
(http://build.chromium.org/p/tryserver.chromium.gpu/builders/win_gpu/builds/65579)
  android_aosp on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_aosp/bu...)
  android_chromium_gn_compile_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/android_chromiu...)
  linux_chromium_chromeos_rel_swarming on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  linux_chromium_gn_rel on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)
  ios_dbg_simulator on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_dbg_simulator...)
  ios_rel_device on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device/bu...)
  ios_rel_device_ninja on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/ios_rel_device_ni...)
  mac_chromium_compile_dbg on tryserver.chromium.mac
(http://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_comp...)
  win8_chromium_rel on tryserver.chromium.win
(http://build.chromium.org/p/tryserver.chromium.win/builders/win8_chromium_rel...)

[Sam Clegg, 2014-09-25 17:40:54]

The CQ bit was checked by sbc@chromium.org

[commit-bot: I haz the power, 2014-09-25 17:41:32]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/598223004/1

[commit-bot: I haz the power, 2014-09-25 19:04:36]

Committed patchset #1 (id:1) as ca602b9be9ba16c08791cd2bf3e1820d7f259273

[commit-bot: I haz the power, 2014-09-25 19:05:17]

Patchset 1 (id:??) landed as
https://crrev.com/9ae3cc379b1aef7d6ae76f1eedc773d297489e07
Cr-Commit-Position: refs/heads/master@{#296752}