Cleanup the code a bit.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@205739 91177308-0d34-0410-b5e6-96231b3b80d8
Fixed a case where we could spin indefinitely if we got an error from fgets that isn't EINTR.

<rdar://problem/16535437>



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@205740 91177308-0d34-0410-b5e6-96231b3b80d8