linux: check the return value passed through HANDLE_EINTR

A smarter compiler (clang) can notice that we were not using the return
values being passed through HANDLE_EINTR, which meant most frequently
that we were missing checking the return value of close().

Review URL: http://codereview.chromium.org/569003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@37786 0039d316-1c4b-4281-b951-d872f2087c98
6 files changed